Aside from 3 wheats (1916,47,55) This was the only notable find today. It reads "Tequila Herradura" and has the year 1870 inscribed, but I believe it to be sooner, anyone sure of the time period let me know. Thanks for looking HH!
The company was formally founded in 1870 by Félix López and the business remained in the family for over 125 years. Today it is owned by US beverage makerBrown-Forman, but the tequila is still made in the same place and facilities under a Mexican subsidiary---per Wiki
Don.....