I am a bit curious about this lens I got a few weeks back. It's a Wollensak Velostigmat, 9 1/2 inches, f4.5, no shutter but including a lens cap. At the time I was bidding I was hoping it was a soft focus lens nobody cared about, but hey, at $65, I can cut the loss. I also thought it would cover at least close to 8x10" but I am not so sure about that, either. Makes a fine doorstop at the moment.
I think so. A focal length of 9.5 in. is about 241 mm. Most lenses of around that focal length like that are typically good for at least up to 8 x 10, so my guess is that it will cover with little room for movements. If you have an 8x10 camera, you could mount it and see how it performs out to the corners. I doubt that a 4x5 enlarger will have enough bellows draw to focus it properly, but certainly an 8x10 enlarger will.