.303 Patent Pointed

Pictured is a .303 British cartridge I believe to be quite collectable.

It is the left hand side one, the two on its right are for comparison only

Some of my collecting colleagues here in Australia & abroad have advised me it is quite a desirable cartridge. I have been fortunate to get a comprehensive history of the cartridge.
However my passion is for German WW2 7.92x57 cartridges.

Could I swap this cartridge for say a German 7.92x57 SS (Schutzstaffel) round or am I just dreaming?

Any opinions are welcome based on the differing values I have been given for this cartridge

thanks in advance

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That is a very nice Birmingham Metals & Munitions Company headstamp and probably worth £40 - £50 here in the UK but I doubt it will buy you a genuine SS headstamp!