Date of Posting  Origination Destination Comments Type Notes
10/11/1941 Kawasaki, Japan Bangkok Inbound Possible Thai Censor 1 circle Hand Stamp The only inbound cover I have seen. Sold for 110 E,  www.auktionen-gaertner.de Auction 40, lot 10021
10/14/1941 Bangkok
G.P.O 		Bloxwich England Thai Censor mark and tape UK Censor tape Hand Stamp No Picture from ESC Aution Thailand
10/18/1941 Bangkok
G.P.O 		New York
USA 		Censor tape Date Slogan Ex Henry Madden lot 82 Harmers Auction
10/22/1941 Bangkok
G.P.O 		Bangkok Local none Date Slogan 12 PM P is missing. My collection
10/24/1941 Bangkok
G.P.O a 		Sussex England Thai Censor Mark and Brittish Censor tape Hand Stamp G.P.O "a " Post Mark.  EBAY
10/28/1941 Bangkok
G.P.O 		Louisville, KY USA Purple Thai censor mark and unknown censor tape Date Slogan 12 PM P is missing. My collection
10/28/1941 Bangkok
G.P.O 		New York, NY Thai Censor and Hong Kong Tape Date Slogan David Wrigley Postal History
10/28/1941 Bangkok
G.P.O 		Lancashire England Thai censor mark Brittish censor tape Date Slogan 12 PM P is missing. My collection
10/28/1941 Bhuket Sydney Australia Thai Censor mark Hand Stamp Status International auction, lot 793 accumulation, 26th October Sydney 2023 current 180 AUD 113USD
10/31/1941 Bangkok
G.P.O 		New York USA Thai censor and South African Censor tape Hand Stamp No Picture Prestige Aution House
10/ no day listed /1941 Bangkok
G.P.O 		Syracuse NY Thai censor and Unknown censor tape Hand Stamp Registered
11/1/1941 Bangkok
G.P.O 		New York USA Thai censor and Unknown censor tape Date Slogan 10 am post My collection
11/1/1941 Bangkok
G.P.O 		Detriot Michicgan Thai censor and Unknown censor tape Hand Stamp Gartner's current auction, lot no. 2566 - 1st Nov 1941, Handstamp, to Detroit. https://auktionen-gaertner.de/Index_EN.html 300GBP
11/1/1941 Bangkok
G.P.O 		San Francisco Thai and mulitple Brittish marks censor tape Hand Stamp recorded but asked not to publish cover
11/3/1941 Bangkok
G.P.O 		San Francisco Thai and mulitple Brittish marks censor tape Date Slogan 12 PM P is missing. My collection
11/3/1941 Bangkok
G.P.O 		Singapore Thai censor mark Brittish censor tape Date Slogan
Handstamp 		Only double use example I have ever seen
12 PM P is missing.
11/4/1941 Bangkok
G.P.O 		Redirects Ohio>Philidelphia >Washington D.C No censor mark or tape Date Slogan Two black lines through slogan may be by U.S  post office post Pearl Harbor
11/5/1941 Bangkok
G.P.O 		Hobart, Tasmania Australia Thai Circle Censor, Australian triangle Date Slogan "P" slug missing in "PM" on Ebay 11/26/2023
11/9/1941 Bangkok G.P.O T​oronto Canada Thai Censor Mark Date Slogan
Handstamp 		AM Time Cancel, David Wrigley Postal History
11/10/1941 Bangkok G.P.O U.S.A. Thai censor and Unknown censor tape Date Slogan
 Lot 380 (no picture) Phila Numis BKK sale 19. 2009 2,000 bhat start
11/10/1941 Bangkok G.P.O Wooster, OH USA Thai Censor mark Date Slogan (no picture)  4:00:00 PM Phila Numis BKK sale
11/18/1941 Bangkok G.P.O Sydney, Australia  Thai Aussie Censor marks Handstamp Airmail KLM
David Wrigley Postal History
11/20/1941 Ron Pibul Cowra,N.S.W Australia  Thai Aussie Censor marks Handstamp Hand Stamp inverted only non Bangkok origination seen My Collection
12/3/1941 Bangkok G.P.O Sourabaya NC JAVA Thai and multiple Dutch tape and marks Date Slogan My Collection
12/3/1941 Bangkok G.P.O Chicago IL Thai and mulitple Brittish marks censor tape Date Slogan 12 PM P is missing My Collection
12/3/1941 Bangkok G.P.O Bendix NJ USA Thai and mulitple Brittish marks censor tape Date Slogan 12 PM P is missing My Collection
12/3/1941 Bangkok G.P.O Batavia Java Dutch East Indies Thai and multiple Dutch tape and marks Handstamp
12/3/1941 Puket Victoria, Australia Thai Censor Mark Disputed Legitimacy Handstamp Late usage,  still under investigation only one I have seen from Puket.   Michael Waugh
Single (off paper) Cover Example Date Slogan

1941 World Peace Date Slogan Cancels and Handstamps   

   Thailand was caught in a tricky predicament politically in 1941.  France had fallen to the Germans and England's fate was in question with daily bombing of London and the losses in North Africa.  Japan had taken possession of French Indo China and was on Thailand's doorstep.  Thailand tried to maintain its neutrality under great pressure from Japan not to.  Eventually when Pearl Harbor was attacked on December 7th (December 8th in Asia due to the international date line).  

    Thailand was also invaded along with British Hong Kong and the American Commonwealth of the Philippine Islands.  A day of fighting ensued in Thailand and the Prime Minister eventually negotiated a safe passage through southern Thailand for the Japanese to attack British Malaysia and eventually Singapore.  Thailand under its Prime Minister was considered a Japanese puppet state now similar to Manchukuo in northern China. 

     On January 25th 1942 they officially declared war on the United States and Great Britain though this was never officially recognized in Washington.  The efforts of the Thai ambassador who initiated the creation of the Free Thai movement with The Office of Strategic Services (the OSS predecessor of the CIA) to continue resistance and partisan effort against the Japanese in Thailand during the war.

To offer a different sceptical opinion on Thailands position at the time I refer to a French Philitelic Blog on the Franco - Siamese War of early 1941 (January -March)

 OCTOBER 1941: A mechanical postmark with flame "THAILAND / IMPLORES FOR / WORLD PEACE" is put into service in Bangkok, an ally of the Japanese, once again showing their duplicity two months before Pearl Harbour. 

https://www.histoire-et-philatelie.fr/pages/008_indo/506c_guerre_franco-siamoise.html.

THE RAREST EXAMPLE ABOVE 
Dual use of Slogan cancel and handstamp on same cover
 (only one seen)

1941 3rd November 12 PM Slogan Postmark (P from PM missing) and Hand Stamp
 in Purple
Sent to a Mrs Bell 17 Sultan House Navel Base Singapore. Most likely base family housing (see photo below)

Hand Stamp
Inbound 
only known example

Inbound Purple Hand Stamp October 11,1941
 possible Thai censor 1 circle in purple

https://www.auktionen-gaertner.de auction 40 lot 10021.

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