This vintage used Hewlett Packard financial business calculator is TESTED and working and comes with its original carying sleeve. 

This Hewlett Packard 10B financial calculator is a reliable tool for any student, business owner, financial professional. It has been tested and is in good working order. The calculator is handheld and has a regular key size, as well as a display size. It runs on battery power and is made by HP, a trusted brand in the industry.

I used this calculator when I was in graduate school, so only very lightly used and in mint like new condition. Please see the photos.