Measures about 8 1/2" x 13" and the back is blank. Due to the size limitations of my scanner, the entire item may not show in some of the scans. 4 to 10 weeks or more. Powered by SixBit's eCommerce Solution. The item "1912 Mexico Mining Tax Document Banco de Oro Gold Mine Sonora Revenue Stamps" is in sale since Wednesday, May 15, 2019.This item is in the category "Collectibles\Paper\Documents\1900-1939". The seller is "herwoldallas" and is located in Dallas, Texas. This item can be shipped to United States, all countries in Europe, all countries in continental Asia, Canada, Australia.