Hi there everyone, thank you very much for all the replies. This is getting interesting (and confusing).
The Linn's article called it "
serrated perforations". An online search of a MEPSI certificate of a similar stamp also gave "
serrate perfs".
The exhibit in the Cherrystone link just called it "
serrates", made with a mysterious mechanical device.
Yet, Spink described it as "
serrate roulette", though such a roulette cannot be found in the references that
rod222 provided (Archer roulette perhaps?). I did find a definition of a "
serrate roulette" here -->
https://brixtonchrome.com/pages/phi...with-g-to-z, which says that 'A serrate roulette is a roulette in which the cuts to the paper are rounded', though I struggled to see the rounded areas on the image of the stamp that I posted - the spikes on the stamp are all 'pointy' (NB: I do not own the stamp).
And then, there is the very similar-looking embossed paper seal posted by
John Becker - all pointy spikes too, though the spikes are longer, and the cutting much more well-defined - not sure if this means an entirely different production method (die-cutting as suggested by
Parcelpostguy?) is used in this caee.
Sure a lot to figure out and learn here!
Posted 12/08/2022 02:59 am
