I was wary of the coin because there is a lot of information about plated coins on Google that are given as wedding gifts to the guests in Mexico. These coins were not legal tender, more of a cultural thing. Some were 14K or 22K depending on the wealth of the families involved. Us poor folks had plated rings. What caught my attention was the hallmarks on the ring. I think they are British, 9 carat gold, which raises my hopes that the 'coin' may not be a plated version.