I have a Vista Cavalier mens 3-speed that used to be my grandfathers bike. I rember riding this bike as a kid in the 70's. I just went out and looked at it closer, it's got a sturmey archer(sp?) shifter and weinmann(sp?) brakes, there is a decal that states Vista by NIDA and a BMA/6 Certified sticker on the seat tube. It was and still is a solid bicycle, but I have no idea if it's an alloy frame or the composition. I suppose the good shape it's in is because it's always lived indoors and was well cared for.