70's Large Thermos - Hot/Cold Liquid - Travel Thermos - Camping - RV - Food

This is a large rust and tan plastic thermos by Canadian Thermos Products model 6402. The thermos has a silver filler model 64F (is it metal or glass??). It's from the late 70's/early 80's and is a "brand of vacuum jar". In excellent vintage shape, there are a few light marks. Please see the pictures for details. Also note, it has a slight "sloshing" sound. I was worried the filler was damaged in some way, but I've tried hot and cold liquids, and it works perfectly!