The 150mm f2.8 Schneider Xenotar is still available for sale. Without the mount, in this condition, the lens alone would cost you at least $2000. It really is perfect. The custom machined tilt mount that I made would set you back, if you could find someone to design and make it. This is the only one. Since we need money to continue New55, I will consider a strong offer for this lens and mount for the Pentax 67. Imagine having such a lens on your 67! Also, with an adapter, you can mount it to your Nikon or Canon full frame camera, or to a Mamiya 645, and others.