Portuguese Colonies - Macau - 'Papel Pontinhado' - What?

I'm working on Macau for the moment, and trying to get familiar with my new Mundifil catalog (2015). The catalog in general is great - far more detailed than Scott or Michel - and when required Google translate normally helps me to make sense of the Portuguese text. However I could need some help to explain the paper type 'Papel pontinhado'. (listed for postage due issue 1904). Google translate tells me 'dotted paper'. What kinds of dots?


Any help appreciated!

Hi!
Dotted paper (vertically or horizontally) is a textured paper, which when viewed against light, presents a network of crossed lines of small lozenges, and can be very soft:
Link in portugese forum on papers!:
http://www.forum-numismatica.com/vi...f=79&t=69476

Thanks a lot perf12

I just found out that the same 'pontinhado' paper were also used on some of the Ceres stamps - of which I have more stamps for studies than the postage dues. I then found the google translation 'dotted' to make some sense. Observed a Ceres with a easily visible pattern, almost like small diamonds/lozenges in a vertical pattern, just as you described it.