Japanese naval air binoculars in case

[PBaczuk]

Here is a nice set except for the leather reticle guard leather cover in need of rest itching. It is stamped Minolta (I believe) and naval air service.

[ghp95134]

千代光
Chiyoko
Chiyoda Optics

From 1937 to 1945

Chiyoda Kogaku, the company name from 1937 to 1962.

In September 1937, the company became Chiyoda Kōgaku Seikō K.K. (千代田光学精工㈱, meaning Chiyoda Optics and Precision Industry Co., Ltd.), abbreviated "Chiyoko" (千代光) on some logos and publications.[15] (The word Chiyoda was created with the characters 千代, meaning "one thousand generations" and 田, the first character of Tashima's name; it conveys the meaning that Tashima's company will last a thousand generations.)[16] The same year 1937, the company established closer ties with Asanuma Shōkai, which quit distributing other cameras to concentrate exclusively on cameras from the Chiyoda company. This association became so close that many customers believed that the Minolta cameras were made by Asanuma;[17] the agreement lasted until the end of the war, but the two companies retained some commercial contacts for some time afterwards.[18] ...

Minolta - Camera-wiki.org - The free camera encyclopedia

The company name changed to Minolta in 1962.

--Guy

[Nick Komiya]

Yes, air service marked with the word 空 in circle. In contrast, those with 航 in circle, often mistaken for air use is actually ship use.