Has anyone ever determined the actual shutter speed of hese cameras? I've googled and probably am going to test a roll but was wondering if anyone has done my homework for me?
Yup... it will be one of them! On the shutter I was talking about, it is a 2-leaf with a simple spring. T & I. It was measured using a gen-u-ine shutter tester and measures 1/50. It performs like that is correct, too. I suspect that your shutter is very similar.
I have one and it seemed to be at 1/25-1/30 from the way negatives came out. The shutter probably won't be very accurate, since they are really old and use a very simple design.