Can anybody think what this is?
Inside a platinum ring constructed within the last approx 5 years -
a series of 4 marks. These are ‘SM’ 'AWJ ‘J’ ‘O’. Each of these are
in a separate sharp cornered rectangular punch stamped about 2mm
apart and they are all in an ariel type font and in capitals.
I have checked with the UK assay offices here and it doesn’t sound
like they are UK sponsor marks.
Any help would be very gratefully received.