In article <5aeuf4$cr7$1@excalibur.flash.net>, photo@flash.net says...

>See www.flash.net/~photo/photo.htm for details.
>Nikkor 55mm CRT lenses, 39mm Lieca Threads, chrome and black, I have a
>spec sheet I can email if interested. Check of web page for photos of
>lenses. $40ea or available in sets. Shipping included.

This is a bargain price for this unusual lens. It is best corrected
for 1/5thX, and makes a sharp f1.2 enlarging lens at f2 (!!), shy
of the corners of a 5x7" print; or a sharp speed macro lens at
around 1/4th X (to cover the corners, but not be too far from
optimum magnification); OR --> it is an excellent (speed ;-) micro
lens when used reversed on a BR-2 ring and used around 4-6X (on long
tubes or a bellows). Heck, at this price, I am considering buying
another one! ;-)
Hope This Helps