Green pocket size comb was an advertising giveaway for Oscar's Repair Shop.  Comb was found in an old primitive wooden trunk full of old "junk" (auto parts, etc.) with some identification to an Oscar Shelstad(?).  Neat piece of old history - would love to connect this to a family member or friend!  Not sure of the exact age of this comb however it is stamped USA on the back so you know it has to be somewhat vintage!!