I recently purchased a small silver cup. The mark on the bottom is stamped MM with an R directly beneath it. The cup has some nice leaf and heart engravings and measures 2 " tall and 1.5" diameter. It is also engraved OJS 1747 on the side. My guess is that is the owners initials and possibly the year of his or her birth???
Can anyone tell me about the MMR mark?
Respectfully,
Krista

