Our old Cord (art-deco version) is still very functional, but the taking lens really needs to be replaced. It's a 75/4.5 Triotar. Finding a new front cell is pretty difficult, so if this ain't gonna happen, we'd be looking at replacing the complete taking lens. We'd like to keep the shutter, as it is a good working Compur. It's the kind of Compur where the front cell thread is larger than the back cell thread. Front thread is close or similar to Copal no. 0.
 Oops, wrong turn in memory lane there. The front cell would be something like 22,5mm Ø, the back cell thread 21mm. [/edit]
What lenses would there be that we could use as a good replacement? It doesn't necessarily have to be a 75/4.5, can be 75/3.5 as well. There are plenty of 75mm lenses around on old and tatty folders, but which one is the right fit?
Other option: we will have to replace the complete lens/shutter assembly and find a combination that fits the cord and can be tripped in the same way as the Compur.
NOT an option: replacing the entire camera and getting a better one. This cord is fine except for the lens and we hate to waste a camera that still has some life in it. Moreover, we've got more than enough cameras as it is. We'd end up keeping the cord next to the intended replacement (newer cord, rolleiflex) and would again start asking the same question.
Any tips appreciated.