i need to know how old my tequila is?

my grandfather gave me a bottle of tequila sauza and it is unopened.it has a texas state liquor tax paid 21cents.the bottle has been sitting in a liquor cabinet for who knows how long, he cant remember even buying it. i wanted to know how i can find out age, if anyone interested in old liquor bottles(even though its full) any info would be great...thanks

Public Comments

1. the brewery would have a clue? if it still exsists... 21 cents is nothing.. so yer must be hhm 40+ years old i guess. there should be a batch number on the bottle somewhere that will indicate how old it is, if you can reference that from somewhere else should be able to date it within a year or 2.
2. In order to preserve tequila's integrity and protect their national treasure, the Mexican government formulated NORMAS in the 1970s to establish and govern tequila standards of production. By law, tequila must meet the following criteria: it must be labeled with 'hecho en Mexico' (made in Mexico), 'NOM' (Norma Official Mexicana), the producer's four digit registration and identification number and the tequila's age (resposado, anejo, blanco, oro). Please try below link, they may be able to age the bottle you have, good luck