Perforations


1. Vertical row

2. Vertical row

3 Vertical

3. Vertical row

4 Vertical

4. Vertical row

5 Vertical

5. Vertical row

6 Vertical

6. Vertical row

7 Vertical

7. Vertical row

8 Vertical

8. Vertical row

9 Vertical

9. Vertical row

10 Vertical

10. Vertical row


Perforation key to identify the vertical row of a stamp with comb perforation 13 x 12 1/2.

Reference: Nordisk Filatelist Tidsskrift (shown with permission from Lasse Nielsen)


Takningsnøgle

© Lars Peter Svendsen 2017-18