Temporal Impacts on stamp paper due to printing ink

I am looking for information on the temporal impact on paper of stamps
as a function of printing ink.

I am particular interested in the processes as implemented in central
Western Europe.

I know there were two studies done. One for Liechtenstein stamps of
the 1930s and one for stamps of France around the 1950s. However, I
have not been able to locate the articles.

Any information on this topic would be appreciated or if anyone knows
where I can get copies of the above two studies.

I suspect your asking how long it takes for canceling ink to set. That
doesn't have anything to do with paper, necessarily.

For 19th Century canceling ink I'm informed it takes about 50 years.

For example, tests conducted during the 1920s on the Grunell forgery's found
that while the proper canceling ink was used, it bled during 'wet' testing.
That would be an impossibility if the stamps had actually been used in 1850.
Thus, the cancel must have been applied much later with intent to deceive.

As far as 20th century canceling inks, that I can't say.

Good luck and give us a report back if you find something interesting.

-al

p.s. For those of you soaking kilos at home (Grandpa), you probably want
them to age in a barrel for at least 3 decades I expect. Also, the SNA
Issues, I've read, use invisible ink, or disappearing ink, in that case,
incinerate before soaking. :-)


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"Emil_P_Washington" wrote in message
om...
I am looking for information on the temporal impact on paper of stamps
as a function of printing ink.

I am particular interested in the processes as implemented in central
Western Europe.

I know there were two studies done. One for Liechtenstein stamps of
the 1930s and one for stamps of France around the 1950s. However, I
have not been able to locate the articles.

Any information on this topic would be appreciated or if anyone knows
where I can get copies of the above two studies.

"Albumen" wrote in message ...
I suspect your asking how long it takes for canceling ink to set. That
doesn't have anything to do with paper, necessarily.

For 19th Century canceling ink I'm informed it takes about 50 years.

For example, tests conducted during the 1920s on the Grunell forgery's found
that while the proper canceling ink was used, it bled during 'wet' testing.
That would be an impossibility if the stamps had actually been used in 1850.
Thus, the cancel must have been applied much later with intent to deceive.

As far as 20th century canceling inks, that I can't say.

Good luck and give us a report back if you find something interesting.

-al

p.s. For those of you soaking kilos at home (Grandpa), you probably want
them to age in a barrel for at least 3 decades I expect. Also, the SNA
Issues, I've read, use invisible ink, or disappearing ink, in that case,
incinerate before soaking. :-)


--

Send Replies to:


"Emil_P_Washington" wrote in message
om...
I am looking for information on the temporal impact on paper of stamps
as a function of printing ink.

I am particular interested in the processes as implemented in central
Western Europe.

I know there were two studies done. One for Liechtenstein stamps of
the 1930s and one for stamps of France around the 1950s. However, I
have not been able to locate the articles.

Any information on this topic would be appreciated or if anyone knows
where I can get copies of the above two studies.

No, the ink used in printing the stamp.

No, the ink used in printing the stamp.

Woops, well the one scientific reference I use is:

Technologic Papers of the Bureau of Standards, T329, Washington DC,
"Research on the Production of Currency Paper in the Bureau of Standards
Experimental Paper Mill" by Merle B. Shaw and George W. Bicking, June 1926,
pp 90-91;

This is in regards to paper, although the Bureau may also go into printing
inks. You will probably have to go into the government database to search, I
dont' think a Nexus will do it.

- al

"Albumen" wrote in message ...
No, the ink used in printing the stamp.

Woops, well the one scientific reference I use is:

Technologic Papers of the Bureau of Standards, T329, Washington DC,
"Research on the Production of Currency Paper in the Bureau of Standards
Experimental Paper Mill" by Merle B. Shaw and George W. Bicking, June 1926,
pp 90-91;

This is in regards to paper, although the Bureau may also go into printing
inks. You will probably have to go into the government database to search, I
dont' think a Nexus will do it.

- al

Thank you very much. All is appreciated. One thing always leads to another.