Engraved 10k gold locket

This is a weighty sturdy locket. Front is prestige with a beautiful B or R. Back side has very minor dent on corner consistent with age. The bail has no thinning. It is marked 10k on the inside. Photo rims are intact. 

6g in weight, 1.25inch diameter. It is 10k however it has a rich glow as 18k gold. Please see demo photo with it on a 18k curb chain. (Chain is display only, it is available on a separate listing)