Way cool, 35mm for still camera use was still in it's infancy. Is this perforated? Any idea as to the type of stock?

Its not 35mm still, its 35mm motion. I'll post a link to a video file after I do the color correction.

Its perforated with B&H perfs, four perfs per frame, it looks like modern film except that there is no soundtrack, its full frame. Modern motion camera stock still uses B&H perfs, but projection film is Kodak perfs. Modern still film is also Kodak perfs.

B&H perfs are round with a flat top/bottom (so the sides bow out). Kodak perfs are square, with rounded corners.

Thanks, I should have guessed by the rounded corners of the exposed area also.

Neat!