US stamps - Identify private perforations
Stamp 1923 USA 1c Washington with Schermack type 3 trial coil perforation Sc 481 | eBay
Robert A. Siegel Auction Galleries, Inc. Sale - 973 Page 30
Siegel Auction Galleries — Power Search Results
Robert A. Siegel Auction Galleries, Inc. Sale - 990 Page 19
Four impressive name collections to be sold during Feb. 28-March 2 Siegel auction series
Beautiful, Franklin 1 cent Private Perforation, Schermack Type III Scott 314 | eBay
Untitled
1c Franklin Schermack Company type III vending coil single | National Postal Museum
US: Vending & Affixing Machine Perforations (Schermack, etc) | The Stamp Forum (TSF)
A Scott#320 Fake purchased on Ebay
Compound Perforations And Control Perfin On Schermack/Scott #392 - Stamp Community Forum
Siegel Auction Galleries — Power Search Results
Values of US Stamps Scott Catalogue #482A: 2c 1916 Washington Imperf
Values of US Stamps Scott Catalogue #482A: 2c 1916 Washington Imperf
Robert A. Siegel Auction Galleries, Inc. Sale - 990 Page 18
US stamps - Identify private perforations
408 1c Washington Used with Schermack Vending Perforations | United States, General Issue Stamp / HipStamp
ScotScott# 343 FRANKLIN, SCHERMACK TYPE III PERF'D CONTROL MARK BM2291 | The Stamp Nut
Stamp Smarter - Private Perforations
484 Used with Schermack type III and gauge 13 perfs, PSE Certificate # 01305655 | eBay
Suspect Scott #534B Schermack TypeIII
The Precision U.S. Specialty Multi Gauge - Greater Mound City Stamp Club
Rare U.S. 1908 4¢ Grant coil highlights Oct. 12-13 Cherrystone auction
