So I found an 150/3.5 Xenar in a jammed compound shutter for cheap ($50)... the front threads are ~approximately 44mm... will this fit into any modern, easy to fit shutter? Or should I just get the Compound repaired?

Any comments about the lens are welcome... it is old, 2.2 million serial # but it has the little red triangle (does that mean it is single coated? I think so?)

I think I'd be really happy to find a more recent Compur that it would fit... I want someone to tell me that it will screw into a #1 Compur ;-)