I don't know much about this bike. I'm guessing at least 1920 or earlier. Crank has a shape that fits the inside of the chainring so no locator. Has the cool pedals, block chain, fixed gear. Badge is missing, no mfr. info on the hubs that I can see. Seat is holding up nice but needs the adjustment bolt. Also what type of chain adjuster setup would this take? Any help would be appreciated