How old is my Frame

[Russ]

My Plunger Frame number is ZA7.S.16245.  I have a B.S.A Owners Club dating certificate from 2009 stating this bike was shipped to Sydney on 10th November 1950. Therefore, it should be a 1951. But, as I read the engine / frame numbers list I see it as showing mine as a 1952.  1951 up to ZA.7.S 14001 then 1952 ZA.7.S 14002 to ZA.7.S 26001. Making it a 1952 Frame.
I have re-read this list a couple of times but can't see the wood for the trees. Am I reading this incorrectly?.
Whilst we are here my Engine number is ZA10. 8318. 1952! is that correct?
Cheers Russ

[KiwiGF]

My Plunger Frame number is ZA7.S.16245.  I have a B.S.A Owners Club dating certificate from 2009 stating this bike was shipped to Sydney on 10th November 1950. Therefore, it should be a 1951. But, as I read the engine / frame numbers list I see it as showing mine as a 1952.  1951 up to ZA.7.S 14001 then 1952 ZA.7.S 14002 to ZA.7.S 26001. Making it a 1952 Frame.
I have re-read this list a couple of times but can't see the wood for the trees. Am I reading this incorrectly?.
Whilst we are here my Engine number is ZA10. 8318. 1952! is that correct?
Cheers Russ

I make it 1951, when frame numbers started at 14000? Engine also 1951.

[Russ]

Kiwi thanks for your very quick reply.  Your document is much easier to understand than what I have. It's nice to know I have an engine and frame of the same year.
Appreciated.  Russ

[KiwiGF]

Kiwi thanks for your very quick reply.  Your document is much easier to understand than what I have. It's nice to know I have an engine and frame of the same year.
Appreciated.  Russ

No probs, that document is actually a screenshot of the uk bsa club web site https://www.bsaownersclub.co.uk/index.php