[Secret]
From: Tokyo
To: London
1 December 1941
(Purple)
Circular #2443
Please
discontinue the use of your code machine and dispose of it immediately.
In
regard to the disposition of the machine please be very careful to carry out
the instructions you have received regarding this. Pay particular attention to
taking apart and breaking up the important parts of the machine.
As
soon as you have received this telegram wire the one word SETUJU in plain
language and as soon as you have carried out the instructions wire the one word
HASSO in plain language.
Also
at this time you will of course burn the machine codes and the YU GO No. 26 of
my telegram. (The rules for the use of the machine between the head office and
the Ambassador resident in England.)
25787
JD-1: 7091 (H) Navy Trans. 12-5-41 (L)(EXHIBITS
OF JOINT COMMITTEE , EXHIBIT NO. 1 INTERCEPTED DIPLOMATIC MESSAGES SENT BY THE
JAPANESE GOVERNMENT BETWEEN JULY l AND DECEMBER 8, 1941)