Relic Copper is an item in the “Loot” category (Items).
In-game descriptions
| Black / White · Black 2 / White 2 | A copper coin used in a civilization about 3,000 years ago. A maniac will buy it for a high price. |
|---|---|
| X / Y · Sun / Moon · Ultra Sun / Ultra Moon · Let’s Go, Pikachu! / Let’s Go, Eevee! | A copper coin used by an ancient civilization about 3,000 years ago. |
| Sword / Shield | A copper coin used by an ancient civilization about three thousand years ago. |
Where to find it
Not placed on the atlas maps (so far: Red/Blue and Generation 3).
Sources : PokeAPI (items, item_flavor_text, machines) · atlas · pokeemerald species_info.h