When we had only a few pictures as a reference you could understand our difficulties in establishing its heritage. Martin Staats Bikes standard bykes star BMX products star products BMX star Way STC stereo bikes Sterling stapfies stolen Bike Co. response Remove reply reply Elaine Taylor July 31 2017 at 12:11 PM I have a 1973 green with front and back Chrome forks W 63520 made in Japan the worlds finest made of Sekine GS with Jewel Sun Tour components replaced sewups for ties fast levers for handlebars and levers chromium Molybde. P.S. You can skip the prefix and welder recovery part-This is pretty clear I think. Japanese-made bicycles were successful in the U.S. market until currency fluctuations in the late 190s made them less competitive leading companies to source bicycles from Taiwan.When we only had a few frames as reference you could understand our difficulty in establishing their heritage.Martin Staats Bikes Standard Bykes Star BMX Products Star Products BMX Star Way STC Stereo Bikes Sterling Stiffys Stolen Bike Co.Reply Delete Replies Reply elaine taylor July 31 2017 at 12:11 PM I have a 1973 green with front and rear chrome forks W 63520 made in Japan worlds finest made by sekine GS with jewel sun tour components changed out sewups for clenchers quick levers for handlebars and levers chrome molybde.P.S. You can skip the prefix and welder extraction part - these are pretty clear I think.Japanese-manufactured bikes succeeded in the U.S. market until currency fluctuations in the late 190s made them less competitive leading companies to source bicycles from Taiwan.