Tony,

I should be able to answer most of your questions when I dig a little bit
into this matter.

One thing to remember is that the terms the locals [Portuguese] use are
awfully confusing and bear no systematics!

At least that is what I am confronted with when studying the Argentinean
watermarks since 1921. The locals have no idea what they are
talking/writing about. I am re-writing the Argentinean catalogue right
now as far as the period 1921-1980 is concerned

In the period of 1912-1939 the machine-made paper has no "laid" structure
at all. Only woven (or linen-binding) exists with a pattern of rhomboids
[or lozanges] that always has the direction of paper parallel to the long
axis of the rhomboid. After 1938 the pattern in the paper wire may have
changed in to the "twill" pattern that may give a "laid-like" effect!
Dandy-rolls at the end of the paper-machine may apply not only watermarks
but also other desired effects including horizontal/vertical lines to
deceive you thinking the paper had been hand-made....

What type of coating had been applied is a comnpletely different subject.
And the coating may be glossy or matt, etc.... The pulp fibres may have
different length and some coloure dfibres may also have been added to the
pulp.

groetjes, Rein

Op Sat, 02 May 2009 23:31:52 +0200 schreef Tony Vella
:

Between 1912 and 1931 Portugal issued a series of stamps called CERES
for use in Portugal and the Colonies. This series was printed and
reprinted by a number of different printers and consequently ended up
being printed on quite a number of different types of paper -- one
printer even went so far as to print a large number of these stamps on
postcard stock. One of the most used papers was called papel
pontinhado. So far I have been using pontinhado (in italics) because I
have not been able to find equivalent in English for this type of paper.

Quite some time ago I asked on this group for help and received no
replies so I shall try again. So far, through the Simoes, Afinsa, and
De Santos catalogues I have been able to ascertain that pontinhado paper
IS NOT standard, chalk-surfaced, granite, laid, woven, glossy, lozenged
or native, and that it has not been used since the late 40s. So I
return to the experts: what the heck is this papel pontinhado? I have
some of these stamps in my collections and even under an electronic
microscope I cannot differentiate these stamps from the same stamps
listed separately under papel liso.

Referrals to philatelic newsgroups have been followed but without
success. Requests for information to the Filatélia Division of the Grupo
CTT (Portuguese Postal Service) have not been answered.

Thanks in advance for all help.



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