Originally Posted by
CV-6
I believe below is what is generally acknowledged as the closest approximation of production. Based on that, the OP's frame would likely fall in 1977-1978.
YEAR Frame No
1976 500
1977 1200
1978 1900
1979 2800
1980 3500
1981 4100
1982 4900
1983 5500
1984 6300
1985 6900
1986 7700
Closed 8300
That is a top of the line frame AKA Team Pro. Got the fork? They could be any color the customer wished but for a lot of reasons the Team Pro colors prevailed for many. My own SB1016 is below:
SB 1016res 01 by
CV6Enterprises, on Flickr
Just to add to your (correct) info., you will see numbers higher than 8300 (up to close to 10,000) but they were not made at Ilkeston after about 8300, rather back at Nottingham (or Worksop?) by very skilled builders, so still quite nice frames, just not 'real' Ilkeston Team Pros....