Peculiar comb perforations!
Publicado: 25 Mar 2012 07:39
The Swiss stamp printing works in Bern had a Goebel reel-fed recess combined with offset-litho press!
The perforation was applied in-line i.e. on the machine directly after printing!
It had, however, a peculiar feature:
This teeth could be normal, thicker or thinner!
to be continued ...
The perforation was applied in-line i.e. on the machine directly after printing!
It had, however, a peculiar feature:
This teeth could be normal, thicker or thinner!
to be continued ...