Nikon 50mm f4 EL-NIkkor brand_Shen Hao The Bilora Stabilet 1011 is

The Bilora Stabilet 1011 is a compact

8 TCC lens for Hasselblad FE-series focal plane shutter cameras

with minor surface staining (mostly on the back

In other words: yes

4x focal length boost (at the price of one stop of light)

Nikon 50mm f4 EL-NIkkor brand_Shen Hao The Bilora Stabilet 1011 isThe Nikon 50mm f4 EL Nikkor is a lens designed for use on enlargers with 39mm lens threads. This lens will mount to Leica Thread Mount cameras (which are also 39mm) but will not work at all, not even a little bit. Don't buy this for your camera: it's for enlargers. It's clean, and in excellent condition, with original box and case.