I just picked up a Fastback a few days ago. Serial #ECxxxxx, so if my information is correct that makes it a May 1967 build. A few things that puzzle me about this bike is that it is painted Campus Green which isn't listed in the Schwinn catalogs until 1968. Another thing I find curious is that I thought the Sprint parts that were made in France were a one year only deal (1966). This one has the correct for 67 MAG chain ring, but both front and rear hubs, the cassette and the derailleur are all Sprint and have "made in France" on them. Does this make sense to anyone here that can explain it to me? Thanks!