The 1st set consists of 6 offices: Kojimachi, Azabu, Yotsuya, Ushigome,
Hongo and Honjo.
The Tokyo Bota was used at these offices in combination with domestic
double circles types dN3B2, N3B3, N3B3S in black and in brown.
KOJIMACHI
AZABU
I am looking for the dN3B2
YOTSUYA
USHIGOME
I have not found a dN3B2 yet
HONGO
I have found an unrecorded cancellation: a N3B3S but with a Hiragana
syllable instead of a Katakane one, thus it should be named N3B2S