US A140 2¢ Schermack Vending

From the Scott Specialized catalog Vending & Affixing Machine Perforations section, this is a Schermack Type III perforation on a #409 (2¢ carmine, imperf, flat plate). I believe the red line on the right is a perforated control mark. However, this is the first one of these I've seen, so could someone please confirm that for me?

The red line at the right of your stamp is the dividing (or cutting) line that marks where a press sheet of 400 stamps would be cut into retail panes of 100 for retail sale, most typically seen with perforated stamps. The vending coil makers ignored the line. It will occur every 20th stamp. Interesting, but nothing particularly special. Sorry.

The Control perfin will be a series of small holes punched into the central portion of the stamp like this one:

Opps John beat me to it...


For the largest online resource regarding Control Perfins, see here
https://stampsmarter.org/features/ConPerfHome.html

Don

Thanks for your responses, and the related article! And I apologize for my ignorance. The specific catalogue verbiage is: "with perforated control mark." Is that another term for the Control Perfin? I thought it referred to the Type III perforation through the red line.

More info here
https://stampsmarter.org/1847usa/PrivatePerfs.html
Don

Thank you. I thought the Schermack perforations alone were significant, but they are not.