Rarest Vintage Citizen Cosmotron Optradar (prototype first solar watch) AS IS.

Watch doesn't work and sold AS IS for parts or restoration. 

Some scratches here and there (all in pictures). 

Bracelet most likely not original and will fit up to 7 inch wrist.

This is a very rare watch. 

According to what I could find this is a prototype of a first solar powered watch and it was never sold to a public.

This 1974 model never entered mass commercial production; it served strictly as a design and technological concept showcase

It comes from watchmakers estate and was sitting in a drawer for a very long time. 

Again, not working and sold AS IS for parts or restoration.