I came across this maker's mark on a pair of cufflinks. Please see pictures. It appears to be a vertical rhombus/lozenge with initials PM, the center part *appears* to be an airplane. Please see attached photos. Any information provided would be great. They are stamped on one end with the double eagle French hallmark and are all 18K. Endcaps are sapphires. I've seen similar styles attributed to Cartier and Boucheron.
Thanks for your help!
~teh
