Coleman Exponent camp mug for camping kitchen, heavy stainless steel metal cup

All stainless mug marked Coleman Exponent on the bottom. I don't know if this was originally part of a camp kitchen set or a stove kit, this line seems to be hard to find these days!

This holds about 12 ounces, and measures 3 3/4" tall. It's used, in good clean condition some light marks and scratches.