Couldn't find your contact info so I apologize for the off-topic comment... My friend just gave me a couple of pairs of antique jeans. One pair is manufactured by Standard Overall Co. and the other are Big Mac. I was hoping you may be able to tell an approximate manufacture date. You can see them here: http://hoosier-built.blogspot.com/2012/07/antique-denim.htmlEmail me your email address, I'd like your input on a project. firstname.lastname@example.org. Thanks!