[7] Production stopped after 1923 when much of the Koishikawa Arsenal was destroyed in the 1923 Great Kantō earthquake, with assembly continuing until the exhaustion of stockpiled parts.

[2] Restoration and re-issue of revolvers that had been removed from service because of damage or wear, was carried out on an as-needed basis over a period of many years.

[9] The original Type 26s are missing the external markings of later produced revolvers and are identifiable by numbers stamped on internal parts.

[2] Type 26s were still being used in 1945 which, according to firearms expert and author Ian Hogg, is considered a testament to their original workmanship and a much more suitable combat weapon than later Japanese-produced pistols.

[5] As the cylinder can move freely, an empty or already-fired chamber can rotate into position instead of the next shot, a dangerous event for the user during combat.

[7] Differences in markings and appearance across surviving Type 26 revolvers, has led to the categorization of production runs into five categories.

[12] Many standard production models suffered from extreme wear because of the long military service the revolvers served.

[12] Arsenal reworked Type 26s lack the bright charcoal blue finish or standard checked patterned grip panels.

[12] Two existing arsenal reworked Type 26s show stampings of Siamese numerals on the front grips indicating official procurement by the Thai government.

[12] Two additional reworked Type 26s have a five-pointed star stamped on the side plate of the revolver indicating Indonesian service after World War II.

[13] The earliest Type 26 holsters were black, and the cotton lanyards issued with them were a dark blue color known in Japan as kon.

[14] Most examples of holsters are stamped on the inside of the clamshell flap with the maker's identification and arsenal inspection markings with the year of manufacture.