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. The serial number is located on the underside of. Each serial number must start with SN or IBD, followed by 11 alphanumeric characters. Email Address Serial Number Example: SN12310D12345. Please note: all fields marked with an asterisk are mandatory fields. 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. Please enter the information below to get started. (located on the underside of hanger cup/bottom bracket shell):ġ975 serial numbers were a hand-stamped five number, individual frame ID. gusset by the bottom bracket, a coaster tab but no brake bridge.

Mongoose bike serial number fego 8431