
Hi Mike, how are you?
From information gathered from various sources, the quoted number of Sprints build per year would give you a clue :
1973 production -> 5446 Sprints
1974 production -> 4232 Sprints
That would make the first Sprint build in 1975 -> VA9679
From May 1975, a new series of Sprint production started with a new chassis number series, starting from VA15001. You can recognize this series by the protection strips on the lower doors, an oddments tray around the gear lever and a rocker switch for the HRW on the dashboard instead of the pull-knob below, etc.
As your car is from the 1st series, I guess that would have been the reason your BL-dealer wanted to clear your car from his stock.
Hope this helps
