The trucks and couplers are from HP Products, as many "HP Compatible" kits were made to save money in development costs for trucks and couplers, which made coupling to other makes of cars.
Jewel Models was based out of Stamford, connecticut; a suburb of New York City. With a very small percentage of the TT market, Jewel Models was unable to afford the cost and tax increases that drove many businesses in connecticut out of business in the 1960's, and the building that Jewel Models made kits in no longer exists.



