Without a doubt, this is the vintage and tasteful, and breakthrough electronic desktop calculator.  

Introduced in 1969, the same year that the APOLLO went to the moon. 

It was one of the smallest electronic calculators ever produced commercially at that time. (13 x 25 x 7 cm) The first mass-produced calculator has its logic circuitry entirely implemented with LSI integrated circuits (ICs) based on MOS technology. The display is a vacuum fluorescent display, the first such display ever used in a production calculator. Unique fonts and digital green colors were also attracting attention. 

It is one of my father's secret (private) collection because the price was high at that time, so he hides the purchase price even now to my mother. However, it now became one of the historical heritage of electronic devices. 

It is with the original power supply cord.

It does not have a box, dust cover, instruction manual.

Rare collectibles. Must Buy!