Long shot.
Stamp Forgeries of Plácido Ramón de Torres
Suggestion: I was trying to recall where I have seen stamps with printed perforations, similar.
It may have been early Stamp Albums.
http://torres.ephilately.de/the-ear...s-footprintsWhen I paged some months ago for the first time through some old American stamp catalogues, the impression I got was the same I had experienced when I first flipped through the European catalogues during my research on Spanish forger Plácido Ramón de Torres (1847–1910) some time ago. Mostly all catalogues seemed to depict the same values of the different issues. The attempt of verifying this spontaneous impression led at that time not only to the discovery that it really was correct, but also that those illustrations were all the work of the same author Torres. That the engraver of some thousands of stamp illustrations published in the European catalogues and in the philatelic reviews between 1864 and 1900 remained undiscovered until our days, is, indeed, astonishing. However, it probably finds its explanation in another surprising and related fact. After making and distributing the illustrations to his clients, Torres used his lithographic stones to produce his own copies and sold those forgeries mixed up with other genuine stamps in stamp packages. As most forged samples represented low values, if discovered, they were noted but seemed to cause little excitement.