Tough call.
I think I'd leave them joined. The ring seems nice, it's not a hugely-valuable coin on its' own, and it's likely been adversely affected by its' time in the setting. So, you won't get any numismatic value out of it; only gold. Without the ring, it's just a small piece of gold bullion. With the ring, it might just be the perfect Christmas present for some wife to buy her husband (assuming it's a man's ring; otherwise switch those words around). Rings can be sized, but try to determine the size and mention that in the auction.
I think I'd leave them joined. The ring seems nice, it's not a hugely-valuable coin on its' own, and it's likely been adversely affected by its' time in the setting. So, you won't get any numismatic value out of it; only gold. Without the ring, it's just a small piece of gold bullion. With the ring, it might just be the perfect Christmas present for some wife to buy her husband (assuming it's a man's ring; otherwise switch those words around). Rings can be sized, but try to determine the size and mention that in the auction.



















