No serial nr. at hp-45


i have a hp-45 but there is no serial-number on it.
what does it means. is it good for me or not.


Perhaps it just fell off or was removed during a repair? On the HP-45 it was just a sticker.


Eary HP calcs had serial numbers on metal foil either inside battery compartment or on back between lower rubber feet. These are easily removed, replaced, or forged so the value in authenticating a calculator is questionable.

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