Markings on Flathead V8 Isky Cams

[rhpope]

Does anyone have any pictures of the markings on a genuine Isky Flathead V8 cam? I was trying to determine if a cam is a reground copy by someone else or if it was a cam originally done by Isky. So far, I have only found a picture of a new cam that I am pretty sure is a genuine Isky that had markings between two of the lobes that were done with a hand held electric engraver. I was wondering if Isky ever used metal stamps in the past like seen on others like Winfield, Howard's, etc. and later changed to hand engraving.

Thanks,
Roger