I have been using this 14k Gold Mercedes hallmarked key chain since circa 1972. Used with many Mercedes since. It's about time to find someone to care for it anohter 50 years or so.

It weighs on USPC scale 0.6 oz. It measures 1 1/16."  Larger than a quarter at 0.955"

I have made no attempt to clean it up but it can be restored with a nail file and polish.

Regards,
Karl