Vintage BIG SMITH UNION MADE SANFORIZED Buckle Back Khaki Pants

BIG SMITH khaki pants featuring buckle back adjustment rarely seen on BIG SMITH brand pants and jeans of the same era.  The smaller size along with label details likely indicate these are a youth model manufactured sometime in the 1950's. From the VintageWorkwear.com collection

Machine loomed BIG SMITH UNION MADE SANFORIZED label.  A rarely seen variation in green with white and red thread as opposed to the common black label with gold and red thread of the same design from the same era

Scovill brand GRIPPER ZIPPER in nickle finish.

Remnants of the Amalgamated Clothing Workers of America union label