You'll be hard pressed to find this item in better condition.

Hewlett-Packard HP-42S RPN Scientific Calculator Open Box! Complete Vintage 90s Tested

Complete in open box. Box is in very good condition, contents are in excellent unused condition. Original batteries have been replaced, but will also be included in case the new owner wants all the original parts (see last photo).

Includes:

Original retail box with hang tag

Plastic packing inserts

HP-42S RPN Calculator

Case with cardboard packing insert

Owner's Manual, 351 pages

Product Registration Card

Accessories and Applications booklet

Extended Protection Plan booklet

Receipt dated 02/22/91

Original batteries (dead)