250mm f:4.2 Wollaston Meniscus Lens
An extra f:6.3 aperture card is included for those folks who want another step between f:5.6 and f:8.
For some subjects, the change from soft to hard is rather abrupt between f:5.6 an f:8.
This extra card gives more options to explore the nuances of the diffused focus image..
The lens, six aperture cards, screws, cap, and cleaning cloth: $69 + shipping
If you haven't seen these lenses before, here's an introduction:
A data sheet for the 250mm lens is attached.
To get some idea of what these lenses can do, look at posts # 725, 726, & 733 here: