US Schermack Control Perfins

Perfin Image
Cover
Number of Holes	9
Missing Pins	1-4-9
City	DET
Company	Detroit & Cleveland Steam Navigation Co.
1906 Series 314
1906 Series 320
1908 Series 343
1908 Series 344
1908 Series 345
1908 Series 346
1911 Series 383	3
1911 Series 384	11
1912 Series 408	3
1912 Series 409	13
Total Count	30
Total Count On Cover	6
Earliest Usage	5/11/1912
Latest Usage	6/25/1912
Comments	This is a broken control pin of pattern 1-9. Last known 1-9 was 10/9/1911. By 1912 D&C correspondence were punched 1-4-9. Interestingly, the user of pattern 149 was identified before pattern 19 was confirmed.