KVK1 screwback

[TerryG]

This KVK1 with screwback is for sale on the Estand. I would like to get it and I have agreed with the seller to start this thread in order to get opinions on this piece. George has already been kind enough to give his comments, so what about the rest of you?

[TerryG]

KVK1 screwback

What, nobody has any opinion? Nobody has one of those in his collection that can be used to compare with?