Peter Barth Red Amber Strap sided flask

This Peter Barth Wholesale liquors Milwaukee Wis. is a beautiful red amber. Lots of color and lots of light shining through. This is a color variant of the Key Hole Pint mold variety. No makers mark. Wonderful applied lip. Found in the early 1970's by a young lady treasure hunting with her family in a central Wisconsin rock pile. House mint in spite of being outside in a rock pile for 100 years.