Hi all. I'm working on a project for which I need some screw mount enlarger lenses. M39 and M42 will both work. I already have a 75mm f3.5 Spiratone, 25mm f3.5 Spiratone, 50mm f3.5 Spiratone, 80mm f4.5 Meopta (Russian I believe), and a 135mm mystery lens on the way. I'm looking for a few more in 80mm and longer focal lengths. I'm trying not to break the bank on this project hence the cheaper lenses but I'm interested in whatever is out there as long as the price is affordable. The cheaper lenses are working great but it would still be nice to have something of higher quality and better quality glass. Please let me know what you have and if I can use it (and afford it) I'll happily take it off your hands. Thanks!