These measure approx. 5/8" X 1", and are marked 925, and also shows STERLING, most of the writing is hidden under the attachment for the cufflink, but the old Mexican Eagle Mark with the No. 4 is also shown, please see photos! 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. Thanks! Launched from my store - Powered by Highwire.com Track Page Views WithAuctiva's FREE CounterEvery buyer gets a MyStoreRewards invitation for cash back