hp 28s advanced scientific calculator great condition works vintage 1986
hp 28s advanced scientific calculator great condition works vintage 1986
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Hewlitt Packard HP 28S Scientific Calculator RPN with new Batteries Vintage 1986
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Vintage Hewlett-Packard HP 28S Advanced Scientific Calculator w Leather Case
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Hewlett-Packard HP-28S Advanced Scientific Calculator Owner's Manual
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Hewlitt Packard HP 28C Scientific Calculator RPN with new Batteries Vintage
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![Hewlett Packard Advanced Scientific Calculator HP-28S [Vintage HP 28S]](https://i.ebayimg.com/images/g/thUAAOSwZztnRkAc/s-l600.webp)
Hewlett Packard Advanced Scientific Calculator HP-28S [Vintage HP 28S]
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Hewlett Packard HP 28S Calculator W/Box Manuals & Inserts(READ Description )
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1990 HEWLETT-PACKARD HP CALCULATOR, CALCULUS, HP-28S, HP-28C
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*CF*Hewlett-Packard HP-28S Advanced Scientific Calculator Ref. Manual(STG94)
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Hewlett-Packard HP-28S Scientific Calculator Reference Manual 3rd Edition 1988
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