They are VOCAB numbers - unique stores references. Have a look here, there is I think a full list somewhere.
The other numbers are part NSNs - NATO stock numbers e.g. 139-9372
https://rmhistorical.com/royalnavy
Tim
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"Manui dat cognitio vires - Knowledge gives strength to the arm"
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Last edited by grey_green_acorn; 23-03-20 at 07:15 PM.
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