US Schermack Control Perfins
Perfin Image
Cover
Number of Holes
9
Missing Pins
5-8
City
NY
Company
E. F. Houghton & Co.
1906 Series 314
1906 Series 320
1908 Series 343
1908 Series 344
1908 Series 345
1908 Series 346
1911 Series 383
1911 Series 384
1912 Series 408
1912 Series 409
1f
Total Count
1
Total Count On Cover
Earliest Usage
Latest Usage
Comments
Must have been reported on E.F. Houghton cover at one time? Test stamp with perfin shown in thumbnail, finger marks on RH side confirm it passed through Schermack machine.