Hello and welcome.
The mark in the upper left that sort of looks like a bell is an eagle mark.
This is the "newer" style and was used from about 1955 - 1980.
The number 3 refers to the city of Taxco.
http://www.925-1000.com/mexican_marks.htmlFrom top to bottom on the other mark:
Taxco,
925,
J. Gomez (the silversmith or company),
Sterling,
Hecho en Mexico ( means "made in Mexico").

Pat.