Find HIA Commemorative Coins in Sixth Street, Brant Street, Lumina Square, and Ballet Twins Road to exchange rewards with the Sage in the Barrel in Zenless Zone Zero (ZZZ). See All 64 HIA Coin Locations, all the rewards, and how to unlock it here!
List of Contents
- HIA Coin Locations
- HIA Coin - Radiance Locations
- How to Find
- Rewards
- How to Unlock
- Effects and Basic Information
- Related Guides
HIA Commemorative Coin Locations
| Note | The Sage in a Barrel will have limited rewards, and you'll always be left with one extra HIA Commemorative Coin in your inventory. |
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All 28 HIA Commemorative Coins in Sixth Street and Brant Street
Sixth Street Coin Locations
| Jump to Area | |
|---|---|
| Sixth Street | Brant Street |
| Lumina Square | Ballet Twins Road |
| Got? | Location | How to Get |
|---|---|---|
(Afternoon) | ・Talk to Ellis who's sitting down at Waterfall Soup. ・Complete the "Trash Talking" Side Commission. Required to unlock the other HIA Commemorative Coin Locations | |
(Morning) | ・Examine the Fragrant Plant outside of Coff Cafe. ・Can only be collected when it's sparkling. | |
(Afternoon) | ・Examine Mr. Panda sitting outside of Coff Cafe. ・Can only be collected when it's sparkling. | |
(Evening) | ・Examine the Locker beside the Workbench inside Random Play. ・Can only be collected when it's sparkling. | |
(Afternoon) | ・Examine the Packing Crate outside of Bardic Needle. ・Can only be collected when it's sparkling. | |
(Midnight) | ・Examine the Skateboard Bench to the right of the Gadget Store. ・Can only be collected when it's sparkling. | |
(Evening) | ・Examine the Dumpster located behind the Newsstand and beside Officer Mewmew. ・Can only be collected when it's sparkling. | |
(Evening) | ・Talk to Jonah outside of God Finger. | |
(Evening) | ・Talk to Roy outside of 141 Convenience Store and give him 300 Dennies | |
(Afternoon) | ・Talk to Pavol Chuck at the side of 141 Convenience Store. ・Talk to the Sage in a Barrel ・Talk to Pavol Chuck again. | |
(Afternoon) | ・Talk to Lupita across the street from 141 Convenience Store. | |
(Morning) | ・Talk to Sjal in front of Waterfall Soup. | |
(Afternoon) | ・Talk to Travis outside of Random Play. | |
(Evening) | ・Talk to Hannah in front of the Convenience Store. ・Interact with the Vending Machine behind the truck to the left of the store. ・Select Refund. ・Talk to Hannah again. | |
(Afternoon) | ・Talk to Clara across the street from Turbo. ・Take a Photo of her using the Camera. ・Talk to Clara again. | |
(Morning) | ・Talk to Luo in front of Turbo. ・Examine the Crate on the 2nd Floor of the Custom Shop. | |
(Morning) | ・Talk to Mrs. Yani across the street from Turbo. ・Talk to "Give Change" at the 141 Convenience Store. ・Talk to Mrs. Yani again. | |
(Midnight) | ・Talk to Gerant outside of the Remodeling Shop. ・Talk to Sita behind the Newsstand. ・Talk to Gerant again. |
Brant Street Construction Site Coin Locations
| Jump to Area | |
|---|---|
| Sixth Street | Brant Street |
| Lumina Square | Ballet Twins Road |
| Got? | Location | How to Get |
|---|---|---|
(Morning) | ・Talk to Luka by the Junction Box. ・Pay him either 50 or 500 Dennies. You'll lose the amount that you choose. | |
(Morning) | ・Talk to Becky by the Junction Box. | |
(Evening) | ・Talk to Li by the Cement Bags. ・Examine the Cement Bag. ・Talk to Li again. | |
(Afternoon) | ・Talk to Kaidou on the raised area of the construction site. Not the second floor. ・Talk to Pepper sitting by the ramps. ・Talk to Kaidou again. | |
(Morning) | ・Talk to Ronnie by the stack of crates. ・Talk to Kousaka by the Junction Box. (might be optional) ・Take a Photo of Kousaka. ・Talk to Ronnie again. | |
(Morning) | ・Talk to Kaede beside one of the Eleveators. ・Talk to Cole right across from Kaede. ・Talk to Kaede again. | |
(Evening) | ・Talk to Yang by the Large Pipes. ・Talk to Sulking Builderboo trapped inside the pipes. ・Talk to Sulking Builderboo again. | |
(Afternoon) | ・Talk to Ironhead by the Cement Bags. | |
(Afternoon) | ・Talk to Gray in front of the 8 Wheeler Truck. | |
(Evening) | ・Talk to Jen by the stack of crates. ・Talk to Kaishu by your Business Car. |
HIA Commemorative Coin - Radiance Locations
All 36 HIA Coins - Radiance in Lumina Street and Ballet Twins Road
| Notice! | We are still looking for all the HIA Coins in Lumina Street and Ballet Twins Road, so check back later for a fully updated list! |
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Lumina Street Coin Locations
| Jump to Area | |
|---|---|
| Sixth Street | Brant Street |
| Lumina Square | Ballet Twins Road |
| Got? | Location | How to Get |
|---|---|---|
(Midnight) | ・Talk to Casey located outside the parking area where your Business Car's parked. | |
(Midnight) | ・Examine the Air Conditioner behind Beauerson Beauty Salon. ・Can only be collected when it's sparkling. | |
(Morning) | Talk to Emmie behind Coff Cafe. | |
(Afternoon) | ・Talk to Orlenda in front of the Pharmacy near Officer Mewmew. | |
(Evening) | ・Examine the Tire beside a kid at the Playground. ・Can only be collected when it's sparkling. | |
(Evening) | ・Talk to Tarshi in front of the Mall. | |
(Afternoon) | ・Examine the Advert in front of the Convenience Store. ・Can only be collected when it's sparkling. | |
(Evening) | ・Examine the Manhole Cover in front of the Waterfall Soup Noodle Shop. ・Can only be collected when it's sparkling. | |
(Afternoon) | ・Examine the Broken Toy next to the girl in the Playground. ・Can only be collected when it's sparkling. | |
(Evening) | ・ Talk to Lynn standing outside the HIA building. | |
(Midnight) | ・ Talk to Ruby outside the HIA building. | |
(Morning) | ・ Examine the Flower Bed in front of Richard Teamilk. ・Can only be collected when it's sparkling. | |
(Afternoon) | ・ Talk to Lilac by the HIA building entrance. | |
(Morning) | ・ Examine the Bicycle parked in front of the Newsstand. ・ Can only be collected when it's sparkling. | |
(Morning) | ・ Talk to Granny Leisha nearby the Silver Statue. |
Ballet Twins Road Coin Locations
| Jump to Area | |
|---|---|
| Sixth Street | Construction Site |
| Lumina Square | Ballet Twins Road |
| Got? | Location | How to Get |
|---|---|---|
(Morning) | ・ Examine the Takeout Bag on a bench behind Officer Mewmew. ・ Can only be collected when it's sparkling. | |
(Morning) | ・ Examine the Ladder across from where your Business Car is parked. ・ Can only be collected when it's sparkling. | |
(Afternoon) | ・ Examine the Bench in the Sunken Courtyard to the right of the statue. ・ Can only be collected when it's sparkling. | |
(Evening) | ・ Examine the Red Vending Machine up on the Plaza Walkway. ・ Can only be collected when it's sparkling. | |
(Midnight) | ・ Talk to Archie behind the big statue. |
How to Find HIA Commemorative Coins
Talk to the Sage in a Barrel
You can talk to the Sage in a Barrel to ask them for the location of an HIA Commemorative Coin. If you don't know which ones you're missing, you can always ask the Sage for some help!
Look Out for Grey Speech Bubbles
NPCs that give you an HIA Coin will have a grey speech bubble over their head. This makes it easy to find them since you can see these through walls!
Find Sparkling Objects
Interactable items that have HIA Coins will sparkle. They'll need to have the sparkling animation for the Coin to appear, otherwise you'll just get generic dialogue text.
Can Only Claim Coins During Free Time
If you want to collect HIA Coins, you'll need to to not have a Main Commission active, and you're character has free time. You can tell when you're in free time when you can see the date and time at the top left of your screen.
HIA Commemorative Coin Rewards
Exchange for Rewards from Sage in a Barrel
You can exchange HIA Commemorative Coins to Sage in a Barrel for various rewards. There are a total of 27 items that you can get in exchange for your coins.
The Sage in a Barrel is a talking trash can that is located at the end of Sixth Street, near the 141 Convenience Store with the three Bangboos in front.
All Maps and Travel Guides
All Possible Reward Exchanges
| List of Items | ||
|---|---|---|
| Senior Investigator Log | Denny | W-Engine Energy Module |
The reward amounts differ depending on how many HIA Coins you give.
List of All Items and Materials
How to Unlock HIA Coins and Sage in the Barrel
Complete “Trash Talking” Side Commission
To unlock HIA Commemorative Coins and the Sage in a Barrel, you'll need to complete the ''Trash Talking'' Side Commission from Ellis in front of Waterfall Soup.
Once you've completed the commission and received your first HIA Commemorative Coin, you'll unlock the ability to find more and give them to the Sage in a Barrel.
List of Side Commissions
HIA Commemorative Coin Effects and Basic Information
HIA Commemorative Coin
| HIA Commemorative Coin | |||
|---|---|---|---|
 HIA Commemorative Coin | |||
| Rarity | A | Type | Commission Item |
| Effects | A precious commemorative coin beloved by Sage in a Barrel. You can extract further information about such commemorative coins from him. | ||
| Description | Limited edition commemorative coins issued by the Hollow Investigative Association long ago. Their exclusivity is due to their rarity, as many of these coins have been lost over the years due to people relocating away from Hollows and other reasons. | ||
HIA Commemorative Coin - Radiance
| HIA Commemorative Coin (Radiance) | |||
|---|---|---|---|
 HIA Commemorative Coin (Radiance) | |||
| Rarity | S | Type | Commission Item |
| Effects | A special commemorative coin that can be exchanged for items at the Sage in a Barrel in Lumina Square. | ||
| Description | Limited edition commemorative coins issued by the Hollow Investigative Association long ago. Their exclusivity is due to their rarity, as many of these coins have been lost over the years due to people relocating away from Hollows and other reasons. | ||
Zenless Zone Zero Related Guides
Tips and Tricks Guide
All Zenless Zone Zero Tips and Tricks
| Gameplay Guides | |
|---|---|
| How to Level Up Characters | How to Build and Enhance Characters |
| How to Ascend (Promote) Characters | How to Recover Battery Charge |
| How to Raise Your Inter-Knot Level | All Inter-Knot Level Rewards |
| Daily and Weekly Server Reset Times | How to Change the Time |
| List of All Achievements | Trophy Guide |
| Missing Mini Cargo Truck Locations and Rewards | Reroll Guide |
| Microtransactions and Best In-App Purchases | How to Increase Agent Trust Level |
| Fast Travel Guide: How to Teleport | How to Modify and Upgrade W-Engines |
| How to Gain Energy | How to Heal Characters |
| Compendium Guide | List of Primer Trials and All Rewards |
| Best Standard Banner Character Guide | How to Get Promoters for Random Play |
| Combat Guides | |
| Basic Combat Guide | How to Daze and Stun |
| Chain Attack Guide | Ultimate and Decibel Rating |
| Perfect Dodge and Counter | Perfect Assists and Parries |
| Attribute Anomaly | What are Additional Skills? |
| Items and Collectibles | |
| How to Farm Polychromes | How to Get and Use Residual Signal |
| How to Get and Use Fading Signal | How to Get and Use Encrypted Master Tape |
| Best Ways to Farm Denny (Money) | How to Get and Use HIA Commemorative Coin |
| How to Get and Use W-Engine Chip | How to Get and Use Ether Battery |
| How to Get and Use Boopon | How to Get and Use Bangbuck |
| How to Get and Use Monochrome | Exclusive Skins for W-Engines |
| How to Get Dynamic Wallpapers | - |
| Game Modes and Dailies | |
| Dailies - Errands Guide | Hollow Deep Dive Explained |
| Officer Mewmew Medal Locations and Challenges | Notorious Hunt Guide |
| Routine Cleanup Guide | Casual vs Challenge Mode |
| Frequently Asked Questions | |
| Should You Choose Belle or Wise? | Does Zenless Zone Zero Have Crossplay? |
| Are There Multiplayer Features? | How to Transfer Data |
| How to Exit the Game | How to Play With Controller on PC/Mobile |
| Birthday Guide: What Do You Get On Your Birthday | Which Server Should I Use? |
| New Eridu City Fund Battle Pass Guide | - |
