How many aperature blades on this puppy? or are there even any?
In a Studio Shutter, the shutter blades also form the aperture. I'm guessing as I'm away from home but I'll venture 15 - ish. They form an imperfect circle. It's just the nature of the 105 year old beast. Wider is less noticeable. But at f22 they can be quite funky. It doesn't affect the image at all. And if you paid the money, you'd be shooting this between f4 and f7. Show's pretty much over by f8.
He is no fool who gives what he cannot keep..to gain that which he cannot lose. Jim Elliot, 1949