Companies that used their own perforations used as their resource imperforate stamps issued between the years 1906 and 1925. These perforations were applied to imperforate stamps in order the stamps they sold in their stamp machines could be easily separated. The distance between the columns of perforations can vary according to the size of the stamp, it is sufficient to say the perforations are in the stamps margins.

Under each illustration of a private perforation I have listed the catalog numbers of the stamps associated with that perforation. Click a catalog number to find out more details about that stamp. I have listed the companies perforations roughly in the order of the quantity issued.

Click here for story behind these the perforations

The following stamps have Schermack perforations

The following stamps have Type Ia, Ib, II and III U.S. Automatic Vending perforations

This experimentaI U.S. Automatic Vending perforations can be found on #319

This experimentaI U.S. Automatic Vending perforations can be found on #368

The following stamps have Type I, IA, II, III and IV Mailometer perforations

The following stamps have Type V Mailometer perforations

The following stamps have Brinkerhoff perforations

The group and type 2A3 Mailometer perforations can be found on #384

The following stamps have Type 2B3, 3A2, 3B4, 4B3 and 4B4 Farwell perforations

The following stamps have Type 4A4 Farwell perforations

The following stamps have Type 4A5 Farwell perforations

The following stamps have Type 4A5 Farwell perforations

The following stamps have Attleboro perforations

International Vending Machine Company perforations can be found on #320