![]() They came in Candy Red or Blue over Nickel. '75 -'76įrom '81-'83 they started using this code (it moved around alot) July '81įor the first year or so it was a hand stamped 4 or 5-digit #. removed BB gusset and added brake bridge. After February 1977, (CB7) the second generation frames appear without the extra gusset between down tube and seat post tube.Ģnd gen. Example: CB6 # (C=Chatsworth B=February 6=1976). It then changes again later into 1976 to include place of manufacture/month/year code followed by a five number individual frame ID. They begin at 10001 and continue until early 1976 when a revised stamp begins to include place of manufacture indicated with the letter "C" ( for Chatsworth, California) followed by the five number individual frame ID. ![]() (located on the underside of hanger cup/bottom bracket shell):ġ975 serial numbers were a hand-stamped five number, individual frame ID. The first four numbers should be a two digit month. The next part of the serial number is eight numeric digits. ![]() gusset by the bottom bracket, a coaster tab but no brake bridge. If the bike frame was manufactured at the Santa Ana CA facility, the first three or four digits of the serial number should be letters abbreviating the model or size of the frame such as XL, XXL, CR24, or something like that.
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