found this old bike in the barn and wanted to know what kind it was. there are a few things that are recognizable (pictures of all). it has plates instead of bars to mount the rear brake and kickstand. it has no spot for a nameplate on the front, but there appears to be one on each side of the fork. the rear brake cable goes through the top tube (inside). i have photos of the lugs as well. on a lot of the bikes I have seen, the top of the rear triangle (by the seat post) is flat at an angle, but on this bike it dents in. there is also a serial number on the underside of the bottom bracket that appears to be 503.474440

(internal brake cable)

(lugs)

(top of rear triangle)

(serial number on bottom bracket)

(kickstand mounting plate)

(brake mounting plate)

(rivets on fork where there appears to have been a nameplate)