US Schermack Control Perfins
| Perfin Image |
 |
| Cover |
|
| Number of Holes |
9 |
| Missing Pins |
2-3-5-7-9 |
| City |
|
| Company |
Unknown |
| 1906 Series 314 |
|
| 1906 Series 320 |
|
| 1908 Series 343 |
|
| 1908 Series 344 |
1f |
| 1908 Series 345 |
|
| 1908 Series 346 |
|
| 1911 Series 383 |
|
| 1911 Series 384 |
|
| 1912 Series 408 |
|
| 1912 Series 409 |
|
| Total Count |
1 |
| Total Count On Cover |
|
| Earliest Usage |
|
| Latest Usage |
|
| Comments |
|
