US Schermack Control Perfins

Perfin Image
Cover
Number of Holes 9
Missing Pins 6-8-9
City NY
Company Hill Publishing Co., The American Machinist Magazine
1906 Series 314
1906 Series 320
1908 Series 343 3
1908 Series 344 146
1908 Series 345
1908 Series 346
1911 Series 383
1911 Series 384 3
1912 Series 408
1912 Series 409 1f
Total Count 153
Total Count On Cover 39
Earliest Usage 1/8/1910
Latest Usage 1/16/1911
Comments This pattern is known on Hill Publishing correspondence and the correspondence of magazines published by Hill. After Mr Hill's death, the company was merged to form the McGraw-Hill publishing.