The Yashica Electro GSN was introduced in 1973. The major change for this camera, compare to the Yashica Electro GT, was the addition of a hot shoe while keeping the PC socket. They can use a wider range of film (25 – 1000 ISO) and have gold-plated electric contacts, which makes them less vulnerable for electric problems caused by corrosion. The camera has not only an electric light meter, but also an electric shutter, so you really need a battery to properly shoot with it.
If you want to know more, The Phoblogapher has written a small review.
Camera, lens cap, and original leather case.
Special battery adapter with one extra battery (15 euro value)
Cosmetic: As new, only with little signs of use
Optical: Viewfinder clean with minimal dust. Lens clean with no haze/fungus/scratches
Mechanical: All shutter speeds are accurate and all mechanical functions are working perfectly