1 December 1941
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.)
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)