These cufflinks measure approx. 3/4" X 3/4", and are marked as shown in photos with a Pat No. 2920363, which dates to 1956. These may need a good cleaning / polishing! Please look at all photographs, as they are part of the description and ask any and all questions prior to looking. Thank! Launched from my store - Powered by Highwire.com Track Page Views WithAuctiva's FREE CounterEvery buyer gets a MyStoreRewards invitation for cash back