So have a Schneider Convertible Symmar 150/265 and the shutter died. (Possibly a Copal 1) I'm looking at another Symmar convertible, 210/370 to replace it and was wondering if they could be swapped. (Don't think I can get the info from the seller before buying and shipping.) I do realize that the F-stop markings would be off but I can do the math and make my own marks on the outside edge. Is there a place to find this info. Schneider's site seems to skip over the older lenses.