In 1966 the revised Gossen Lunasix 3 (in US Luna Pro S) was introduced, the main difference being a range of clip on accessories. A later revision changed from the original mercury batteries, these models being distinguished by a black case. Finally, the computer dial was replaced by the Lunasix F dial which incorporated exposure compensation, this version called Lunasix 3s.
The Lunasix 3 introduced the standard incident light dome and meter front end aperture for clip on accessories that featured on every Gossen professional meter until the completely restyled Variosix F of 1990.
The Lunasix was Gossen's flagship meter until the 1977 Profisix and remained available for some years afterwards.
The meter, soft case and strap
Cosmetic: Good condition, with signs of use