Explain To Me How This Could Happen..?

Hi guys..I was going through some of my Province stamps and came across these 2 Nova Scotia stamps (Scott 8 and 9) (more have the same oddity)...Looks like partial perforations running randomly on these stamps...See the photos below and let me know what you think..Thanks.

Robert

wert: Does it affect the front paper too or just the gum? Are there any indentations on the paper?

Jogil...Does NOT affect the front of the stamp at all...Here is a better close up...

Robert

Careful examination shows the regular perforations are punched from the front of the stamp leaving a slightly raised and sharp rim of paper around the edge of the hole (add: on the back side). If two stamps were placed back to back and pressed together, the sharp edge of the perforation hole edges would cut into the gum side of each other causing the damage you illustrate. (add: and alternatively, the blind perforations at the top are pushed back to create a row of raised dimples on the back side, which could produce much the same effect.) I believe you show a relic of long-term poor storage.

Ya, that would make sense John..Thanks.

And obviously the sheets were not stored in even piles.

And I have another stamp with the offset on the back where the offset numeral is in the middle of the stamp.

Robert

John - very clever theory and probably correct.

What a coincidence!

I came across the same effect last night on the same two Nova Scotia stamps. They where from two different sources two years apart, so I suspect that this type of damage is common for these stamps.

This was discussed on another thread back in 2012 where someone (nitrolures) thought there was a stitch watretmark on a Nova Scotia stamp. Finally, someone replied something like the conclusion that was described here.

https://goscf.com/t/16647&whichpage...hTerms=stich start on top of page #3

Thank you pepere jack. This community has a tremendous wealth of information that has previously been posted (of course finding it efficiently is sometimes a bit of a task).
Don

This same effect can frequently be seen on mint examples of the US Pan-Americans set, Scott 294-299

I am seeing the opposite here - it looks like the top row of the one cent black indicates the perforating was done from back to front, but not going all the way through.

Usually it IS front to back.

BeeSee..The stamp is partial perforated form FRONT to BACK.

Robert