C15 frame numbers

[Hannu]

Hi
In the process of trying to age my BAS C15 trials bike I found that the frame number was not clear therefore could not obtain a dating certificate so I could register the bike.
I have found another frame and seem to remember at the time finding a list or frame numbers on the net that related to the year of manufacture. Be bowled if I can find it now.
The frame I'm looking at is C15. 2896 and its thought to be around 1959, could someone tell me if this is correct ?

Many Thanks

[chaz]

https://draganfly.co.uk/wp-content/uploads/data/pdf/bsa_vin.pdf

[Hannu]

Many thanks Chaz