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Old September 9th 07, 05:35 PM posted to rec.collecting.stamps.discuss
Douglas Myall
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Posts: 83
Default (RCSD) Chalk surface paper


"Blair (TC)" wrote in message
oups.com...
On Sep 9, 9:55 am, "news.knology.net" wrote:
How can you tell if a stamp is chalk surfaced or not?



Chalky paper, used especially on British stamps, is easy to

identify.
Chalk-surfaced stamps when rubbed with silver will leave a black

mark
on
them. Be careful when testing these and just touch a small corner or
part
of the stamp.

You can sort out some of the modern ordinary & chalky paper stamp
issues with an Ultra-Violet lamp.

Blair



What Blair says is perfectly true but you need to know whether the
paper you are testing is indeed coated with chalk; some papers are
coated with other materials, such as china clay. In addition, all
coated papers need to be distinguished from those where the filler is
added to the pulp mix. Your catalogue should tell you what the papers
are for the stamps you are interested in.

Douglas


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