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identify silver grinding mexico

The Mexico Silver or Silver Made in Mexico marks are seen on pieces from the 1920s through mid 1940s their silver standard varies but is commonly above925 purity The following number marks indicate silver purity in a percentage of 1000ths The intaglio 900 mark is found on work dating from the turn of the century until the 1920s... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

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