https://www.hpmuseum.org/features/55f.htm
Working and very clean HP-55 programmable calculator -1974-77. Comes with quick start guide, manual, case and AC adapter.
https://www.hpmuseum.org/features/55f.htm
Working and very clean HP-55 programmable calculator -1974-77. Comes with quick start guide, manual, case and AC adapter.