Wonderful sterling grapes pin marked TAXCO Sterling 925 A. Dominguez and an Eagle 3. Rich patina remains intact. It measures 1 1/2" x 1 1/4".
 
This mark can be found in The Little Book of Mexican Silver Trade and Hallmarks on pages 25. 96 and 109.
 
We have several grapes pins on our site. They are such fun to wear to the wineries when wine tasting.