![Vintage [1974] HP Programmable Calculator HP-55](http://cdn.shopify.com/s/files/1/0512/9597/7651/products/hp4_{width}x.png?v=1666280498)
![Vintage [1974] HP Programmable Calculator HP-55](http://cdn.shopify.com/s/files/1/0512/9597/7651/products/hp3_{width}x.png?v=1666280498)
![Vintage [1974] HP Programmable Calculator HP-55](http://cdn.shopify.com/s/files/1/0512/9597/7651/products/hp551_{width}x.jpg?v=1666280497)
![Vintage [1974] HP Programmable Calculator HP-55](http://cdn.shopify.com/s/files/1/0512/9597/7651/products/hp2_{width}x.jpg?v=1666280497)
![Vintage [1974] HP Programmable Calculator HP-55](http://cdn.shopify.com/s/files/1/0512/9597/7651/products/hp4_345x@2x.png?v=1666280498)
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.
![Load image into Gallery viewer, Vintage [1974] HP Programmable Calculator HP-55](http://cdn.shopify.com/s/files/1/0512/9597/7651/products/hp4_1024x1024@2x.png?v=1666280498)
![Load image into Gallery viewer, Vintage [1974] HP Programmable Calculator HP-55](http://cdn.shopify.com/s/files/1/0512/9597/7651/products/hp3_1024x1024@2x.png?v=1666280498)
![Load image into Gallery viewer, Vintage [1974] HP Programmable Calculator HP-55](http://cdn.shopify.com/s/files/1/0512/9597/7651/products/hp551_1024x1024@2x.jpg?v=1666280497)
![Load image into Gallery viewer, Vintage [1974] HP Programmable Calculator HP-55](http://cdn.shopify.com/s/files/1/0512/9597/7651/products/hp2_1024x1024@2x.jpg?v=1666280497)
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.