I worked in the Sekine Plant that was located in Manitoba for almost 5 years. All their frames were chrome-Moly frames and were silver soldered. I have one that I "put together" in 1975. I never use it anymore, but it is still in perfect shape. I still have some spare parts, tape, derailers, "SEKINE" logo stickers, etc. They were a hell of a bike, and in fact, our Olympic team trained on them for 2 years (they were donated). I left there before the Plant closed, but my brother was there until the end. I still have the jacket we had to wear in the Plant!