When's the last time you saw one. They just don't exist.
A couple years ago one of these in #1 shutter got $1200 + on ebay. Not to worry, those days are gone, but just to say these are uncommon in this size . . and Oh So useful!
This one is in beautiful shape. Really crisp. Glass is perfect. The image above is on 6.5X8.5
Whenever I'm trying to get a feel for whether a lens is truly sharp, this is my benchmark. I'll pop this on the camera, look at the contrast, count lines in the chain link fence across the street until they dis-appear, then put the other lens I'm curious about on to compare. $195