Take a trip back to the mid-1970s when the U.S. attempted its big push toward the metric system! Up for sale is a highly collectible, complete vintage 1976 \"The Exciting World of Metrics\" metal lunchbox by King-Seeley Thermos Co., featuring its matching blue 8 oz. conversion thermos.This educational relic is covered in fantastic retro graphics teaching kids about kilograms, kilometers, and Celsius. It is the perfect conversation piece for math enthusiasts, history buffs, or vintage pop-culture collectors• Manufacturer: King-Seeley Thermos Co.• Year: 1976• Condition: Very good vintage condition. The lithograph graphics remain exceptionally bright and vivid. The original red handle and latch mechanism are intact and working perfectly. The exterior rim shows light, age-appropriate shelf wear, and the inside is very clean. The matching thermos is complete with its red cap.• Includes: Metal lunch box and original matching 8-ounce thermos.
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