Pre-order. Production within 2 weeks. 
 
This is a vintage lens for large format cameras.
For collodion photography or large film cassettes.
170 mm f4 Lens for field camera.
 
This is a simple 170 mm f4 periscope, the lens looks good externally and creates a nice Vintage image. Lens mounting system is 67 mm thread, with a response clamp on the camera. It has a fixed aperture. Glass is clear.
 
Length - 60 mm, diameter - 72 mm, mounting - 67 mm. Weight ~ 120 grams.