I see signs of a shutter curtain damage

[raid]

Paul,
My cameras look fine to me, so this problem came to me as a shock.

 

[raid]

I got back the test roll but there is no light leak showing on any negative.
I used M3, M6, Hexar RF, and Olive Canon P.

Back to searching for the pinhole ... maybe it was a chrome Canon P.

 

[Blind_spark]

Quick test, if you have access to a darkroom. Take a bit of paper and cut it to the height of a strip of film. Place it where the film would go (In the Barnack Leica, make sure you leave a long enough tail so you can grab it back) and take the camera out in the sunlight without the lens (no need to create new pinholes =P). Paper, based on my tests with a pinhole camera, works out to about ISO25, so a couple minutes each should do it.

Check both curtains, and you will eventually find the culprit. Save some film =).

 

[raid]

I removed the roll mid-way in the Canon P [chrome] and I also checked the black P.
It was a very easy check by opening the backof the camera and removing the lens from the fron followed by pointing the camera at the sunlit window. A tiny hole appears in the curtain of the chrome Canon P.

What a relief! I will use a toothpick with liquid black tape to take care of this hole.

Thanks for all the tips by everyone in this thread.