Stamp Giveaway, Series 2 #34 [solved]

Unesco (Mongolia, set and souvenir sheet)

Red Cross (Tanzania, set and souvenir sheet)

Unicef (Haiti, set)

What was the main cause of the British Post Office using doubly fugitive inks to print all stamps from 1884 to 1902?

First correct response received prior to or at  10 A.M. on Nov. 1, 2022, eastern US time will be the winner. If no correct response is received, the first response indicating the only colors used during that time will win. My decision as to the winner will be final.

Good luck to all who choose to participate!

Will   

Protection against the removal of cancellations?

So, nobody can create a fake stamp forgoing paying for the letter.

Thanks for participating so far. The first two responses are more results than causes. I am looking for the reason the Post Office would need to protect against removal of cancellations. Stopping forgeries would also be a result attempting to meet a need caused by another action, although I am not sure it applies here. The answers are close but no cigar.

Feel free to make more guesses.

Will

Maybe the same as waisaacs but so stamps could not be reused? Used once and the colors would fade away into the envelope.  “The authorities were concerned that the existing stamps were being soaked off envelopes and reused, and they wished to use fugitive inks that would wash away if immersed in water.”  Apparently there was a large market selling reused stamps to the public by non-government people thus denying revenue to the government.

Yes, still the only thing I can find is to prevent removal of both printed and written (thus the double in doubly fugitive) cancellations, with reuse of the stamps for postage or revenue being the concern.

Maybe that people know that the received letter was indeed carried by the mail service, thus an official letter,  and not some kind of fake letter (ala scam).

So the ink would not run or fade due to exposure.

Jerry

I am thinking of a change prior to 1884. Jerry, you have it backwards. Doubly fugitive ink easily washed out when exposed to water. waisaacs, what first caused the need for such protection? rsirian1, what was the change that allowed such widespread reuse of stamps? You guys are so close.

Will 

Shall I jump in?😅

the passage of the Customs and Inland Revenue Act 1881 necessitated new stamps valid also as revenue stamps

The Customs & Revenue Act of 1881 called for a single stamp that could be used for both postal and fiscal use. This was achieved by incorporating the words POSTAGE AND INLAND REVENUE in the design of the new stamp.

The printers, De La Rue, used a double-fugitive ink to prevent the removal of both postmarks and handwritten fiscal markings, neither of which could be achieved without altering the color of the stamp.

Congratulations, Najuk! That's the answer I was looking for: the use of the same stamps for postage and revenue starting in 1881. The Post Office could no longer control cancellation ink, so stamps became easier to reuse and this necessitated a change in stamp colors to only those in doubly fugitive ink, lilac and green.

Thanks to all who participated! Watch for the next giveaway.

Will

waisaacs

Yes, still the only thing I can find is to prevent removal of both printed and written (thus the double in doubly fugitive) cancellations, with reuse of the stamps for postage or revenue being the concern.

I was so close!  Next time….  Thanks as always for the fun contests Will.

waisaacs, I thought of declaring you the winner if no one else came up with the 1881 change in stamp use as the cause. I'm glad you enjoy the contests.

Will

Thanks, Will!😊