Read the stamp
Taxco silver marks
In Taxco silver marks, an older eagle punch belongs to the Mexican registration system. A registration number is not a fineness percentage.
Maker registrations and eagle punches
An older eagle punch belongs to the Mexican registration system. Later letter-number registrations begin with a location letter, maker initial and registration number; T identifies Taxco. A registration number is not a fineness percentage.
What to check next
Look for a workshop name such as Los Castillo or a personal name such as William Spratling beside TAXCO and MEXICO. ALPACA names a base alloy. Preserve the full code, including its letters, when comparing a maker’s registered mark.