Saw this at an antique store & thought it was pretty unique. 20", 1960's?? Says President on tank & chainguard, made in Belgium, cant remember the brand & can't read it on the pic of headbadge. Missing rear fender. Has a 3 piece crank. Sorry about the crappy cell phone pics, but I didn't have my camera with me. Anyone know anything about these & is it worth anything?