Working HP-11C Scientific Calculator w/ Case

Great working HP-11C Scientific Calculator. Serial No. 2524A69285. Visible scratches on top metal faceplate as shown by pen tip and HP-11C emblem is

A look inside Hewlett-Packard's HP-11C

HP-11C scientific calculator

HP 11C Scientific Calculator. Not working for parts or repair.

Vintage Pocket Hewlett Packard HP 11C Scientific Calculator Works & Handbook

HP-11C resuscitation : r/hpcalc

Building The DIY HP41C: A Field Report

HP 11C Scientific Calculator

RPN calculators

EXCELLENT Working HP-11C Hewlett Packard Scientific Calculator USA w/ Soft Case

Hewlett Packard 11C RPN Scientific Calculator. for Sale in San Francisco, CA - OfferUp

Got Slide Rules? (note: we have a slide rule trader. No longer available.) - MakerTrade - Dallas Makerspace Talk