US Schermack Control Perfins

Perfin Image
Cover
Number of Holes
Missing Pins	"U"
City
Company	Unknown
1906 Series 314
1906 Series 320
1908 Series 343	3
1908 Series 344
1908 Series 345
1908 Series 346
1911 Series 383
1911 Series 384
1912 Series 408
1912 Series 409
Total Count	3
Total Count On Cover
Earliest Usage
Latest Usage
Comments	First appeared in Perfins Bulletin as a request for information from Atholl Glass. Two additonal copies of this pattern have since surfaced.