 |
 |
 |
|
 |
|
 |
| Start / | Knowledge / | Prints / |
| Accidentals | Changes | Differences | Errors | Fakes | Kinds | Mistakes | Parallel Issues | Printers Waste | Quality |
 |
Knowledge / Safety Measures / Silk Threads / Differences |
Silk Thread Difference: common term for two the same postage stamps with no silk thread agreement |
|
    |
    |
Silk Thread Position Difference: common term for two the same postage stamps with no silk thread position agreement |
Silk Thread Quantity Difference: common term for two the same postage stamps with no silk thread quantity agreement (once or without silk thread) |
 |
 |