Hi Cynthia, thank you for writing in with the following hallmark question:
"I have a gold rope chain that is marked 750 and I know that is European for 18K gold. My question is about the mark that is opposite the 750, it is 151AR. I have spent 2 hours looking on the internet without success. I even called a local jeweler. Is this a country code or a manufacturer or designer? I would love to know. My father traveled to Italy and Arabia at that time (1960-1980) but it could be local too."
Cynthia, your father's gold chain is of Italian origin. And you aren't far off either - not a country code but an Italian town abbreviation.
AR is the Italian provence abbreviation for Arezzo - From 1934-44 registered smiths were assigned a number.
