Good to know. I think this was only the 3rd bike I tried looking up by serial number. So who knows what I was looking at. This a 24" 1952 scwinn step through and a 1947 26" Monark Super Deluxe Step through. Also had trouble nailing the monark down because the serial number conflicted with it having a serial number plate instead of stamped in the frame. Plate said post war, but the serial number said pre war on the 1st list I looked at. This whole serial number business turned out way more messed up then you would think it should be. Lol. Other then Schwinn I don't even look them up much anymore. Unless it's time to sell, which I'm reluctantly starting to do now. But it's time. I'm being I have 30+ frame sets 14 complete bikes and probably more the double both numbers in parts. 2 years ago, all i owned I owned 2 bike. A Specialized Sirrus and an off brand Chinese electronic mountain bike. And my 91 diamondback TX-100.