@ ROD222
Quote:
I'd be interested in an explanation on the last stamp.
The difference between the gaps in the lower perforating pins is large.
I feel there must be a reason for this?
Seen, if I recall in DANZIG stamps?
read this post
https://goscf.com/t/50665it's a "tall" stamp, happens when the gear that moves the perforation needles down over the sheet move's a little too far, short stamps exist as well.
@ Peter
Quote:
Most of it is poor print quality, the last picture shows a fancy way of removing a stamp from pane
only partially correct, the white dots are acid damage or cleaning damage done to the clichés. Some paint in this era of time had acidic elements which eat away at the clichés. But they are somewhat consistent and you can actually track the development of these dots if you have a lot of this issue.
And the last stamp is a perforation error. I have several examples of this occurrence in danish stamps from the same time period.
the Danzig one could also be a victim of broken perforation needles, it looks like a comb perforation, if it is, then the horizontal rows are identical (which they are) but this stamp is clearly cut out with scissors so i'm not completely sure on that.