Old HP-65 Hewlett Packard Calculator HP 65 vintage. Former(Old) Calculator HP 65 Hewlett Packard. I not to know if she(it) function(office). The item "Old HP-65 Hewlett Packard Calculator HP 65 vintage collector" is in sale since Tuesday, April 2, 2019. This item is in the category "Business & Industrial\Office\Office Equipment\Calculators".The seller is "deco-et-trouvailles" and is located in Kirchheim. This item can be shipped worldwide.