c1960 c-31 Alberto Contreras Modernist silver/onyx bolo tie w/fancy tips. Solid sterling, weight and measurements in pics (scale tared out with containter, weight shown is just the bolo). Clip on back is not sterling, tips and slide are sterling.

Alberto Contreras (1949-1994) was taught silversmithing, by Frank Patania Sr., prior to 1949.
In 1949 Alberto Contreras started his silversmithing shop, which would be one of
three main, custom silversmithing shops, in Tucson, during that era:
1. Thunderbird Shop - Patania
2. Alberto Contreras
3. Carlos Diaz