Vintage Hewlett Packard (HP) Calculator Model 22 with case

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Vintage Hewlett Packard (HP) Calculator Model 22 with case:
$37.02

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Here is a vintage HP Calculator Model 22.  Seems to be in good condition but the battery contacts are slightly corroded. I put in two AA\'s and it did not turn on -- not sure if the calculator works.

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Vintage Hewlett Packard (HP) Calculator Model 22 with case:
$37.02