Type II Rotary Horizontal Coil
2¢ Washington Head
Type II Perf 10
Rotary Coil
Type II Rotary Vertical Coil
Watermark Check and Type Check : If you have determined that your perf 10 coil is rotary and type II and if it is perforated vertically, you will need to check for watermark. If it is perforated horizontally it must be unwatermarked. See the caution below regarding the unwatermarked type II horizontal coil.
| Rotary Coil - Type II | Watermark | Number |
| Perf 10 horizontally (vertical coil) | none | 487 |
| Perf 10 vertically (horizontal coil) | single-line | 454 |
| Perf 10 vertically (horizontal coil) | none | 491 |
Caution
Care must be taken when examining the type II horizontal coils. Single line watermarks can be very difficult to detect and may escape even very careful scrutiny. The majority of those submitted for expertization are given a negative opinion, that is they are determined to have a watermark. The rarity of the unwatermarked type II horizontal coil is so great, that even a poor copy is worth submitting for certification.
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