1955 Cox .049 Thermal Hopper engine, new in box

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Rare cox thermal hopper, nip!! Foreign bidders welcome, alternate payment methods accepted. Up for sale is a new in bubble package, Cox Thermal Hopper from 1955. This gorgeous and very rare Cox Thermal Hopper.Thermal Hopper .049 (0.8 cm³)Manufactured in 1955 (#360)This early engine uses the cast crankcase of the Space Bug engine and sold for the same price ($6.96 in 1953). Basically it is a Space Bug without fuel tank. Instead, a circular backplate for mounting on a firewall was added. The pretty bubble pack also fits the Space Bug. Like any reed valve engine, the engine was capable of running in both directions, and the manual suggests to "stop it by putting finger over propeller nut and putting pressure on propeller" - well, that's a great idea! I would not really recommend to try it, except if you like to experience real nostalgia feelings including cuts and bruises.An exceptionally rare engine for your collection. Thanks.