Sold - Approximate Value $35 for 1979 Muppets Thermos Metal Lunchbox Good Condition: Now waiting for a new Muppets Lunch box for our online collection. 1979 Muppets Thermos Metal Lunchbox Good Condition, Some rust on the edges and on the inside of the lunchbox. Printed on the bottom on the lunchbox, "Copyright Henson Associates, Inc. 1979" "Thermos Division King-Seeley Thermos Co." Perfect for a Muppets Collector. Sold - 1979 Muppets Thermos Metal Lunchbox Good Condition MuppetsLbox (c) Copyright 2023, All Rights Reserved.