They were made in the 80s, after Columbia's successful RX-5 reproduction. Several other bikes came out which weren't technically reproductions, since this exact bike never existed before then, they were just in the spirit of 1950 or so. I think this headbadge is the one that says "Circa 1950". It looks in nice condition under the dust so I'd say you could probably get in the area of 3-350$ for it.