I picked this up to add to my collection and restore, can anyone identify the period of the frame by the rear brake bracket or the bracket on the chainstays, also the the stamped number on the BB is SL6 2YT 3 . also the cable guide under the BB was made in france and fixed with some type of silicon/glue. The groupset is shimano exage 500lx, the bars have engraved Dawes handbuilt in England so Im guessingthis is a mismatch of parts?
many thanks
many thanks