Week #461 "Who will be our WINNERS!!!!!!!"

[Jenna S-migration]

Q. What Security Device is used in US Military Payment Certificates and many other world notes but has not been used in other types of US currency?

 

Good luck everyone & have a great weekend!

 

Our first place winner will receive a coupon for 1 note graded under the Standard grading tier. (You must have an active account with PMG, call PMG for details) There will also be a runner up prize given to a randomly selected player with the correct answer.

 

 

REMINDER: The Numisma-Quest ends on Saturday at midnight EST. Entries after that time will not be valid. See the Trivia info post for more details.

 

When you post your answer, only the administrators can see it . Stop back this Monday. We will make all the posts visible and announce the winners.

 

[Coindude]

Watermark.

[ritter]

a fake overprint was applied so it could be used in other countries.(guilloches).

[bsshog40]

Ink sensitive to ultraviolet light

[jamorse99-migration]

 

I'm going to go with planchette paper.

 

This site says that Military Payment Certificates are

"printed on planchette paper, that is, paper with small discs of colored paper imbedded at random throughout the paper."

http://www.papermoneyworld.net/usmpc/mpc_central/development/-script.htm

 

According to :

http://www.scripophily.net/amerbanknote.html

planchette paper was created in 1891 by the American Bank Note Company

 

 

[Amarillo]

Printed on planchette paper with small discs of colored paper in bedded at random throughout the peper. The ink was one ink prink over the top of another, and tint inks on the face of each certificate.

[jtryka]

Here is my guess:

 

"An interesting innovation was introduced with the release of Series 461 in 1946. Ink sensitive to ultraviolet light was used for one of the background (tint) inks on the face of each certificate. This ink is not identifiable as anything out of the ordinary under sun, incandescent, or fluorescent light, but stands out under ultraviolet illumination. This is a fairly common security device used by many countries today but it was new when first used for military payment certificate printing."

[MercuryMan]

Colored dots.

[BigBob]

Planchette paper, paper with small colored disks embedded, was used as a security mechanism on the MPC notes

[DC Dawg]

The use of ink sensitive to ultraviolet light.

[rtpjr]

Ink sensitive to ultraviolet light was used for one of the background (tint) inks on the face of each certificate.

[mhardin2413]

ink sensitive to ultraviolet light

[Razor2k]

Overprints?

[GW]

 

Ink sensitive to ultraviolet light

 

An interesting innovation was introduced with the release of Series 461 in 1946.

Ink sensitive to ultraviolet light was used for one of the background (tint) inks on

the face of each certificate. This ink is not identifiable as anything out of the

ordinary under sun, incandescent, or fluorescent light, but stands out under

ultraviolet illumination. This is a fairly common security device used by many

countries today but it was new when first used for military payment certificate printing.

 

 

[Jenna S-migration]

Q. What Security Device is used in US Military Payment Certificates and many other world notes but has not been used in other types of US currency?

 

 

A. PLANCHETTES

 

Congratulations to jamorse99 and runner up Amarillo!

 

Thanks for playing this weeks Numisma-Quest. Dont forget to stop by for this weeks NGC question!