This is an original 1965 Mattel Barbie, Midge, Skipper Metal Lunchbox Thermos Bottle. Bottle No. 2825. 8 oz. Red Lid. Manufactured by Thermos Division, King-Seeley Thermos (KST) Company, Norwich, Conn USA
This girl definitely has aged bottom is rusted, cup handle tattard 
It's still a great add to collectors