These cufflinks measure approx. 1/2" X 1/2, at their widest, are marked as shown in photos . Needs cleaning and polishing!Although not marked, these have been tested and are STERLING SILVER. The PAT date on these is JUNE 11, 1920. Please look at all photographs, as they are part of the description and ask any and all questions prior to looking. Thanks! Launched from my store - Powered by Highwire.com Track Page Views WithAuctiva's FREE CounterEvery buyer gets a MyStoreRewards invitation for cash back