Started a marine product trading business in May 1896, engaged in developing the Senkaku Islands from 1897. Now highly successful. Head Office in Naha, proprietor Koga Tatsushiro. In the first year in business, shells were fetching 5 sen per kin (about 0.6kg), but in 1907 this had risen to 10 sen.
It purchases 40,000 kin on average every year. The manager is Tsutsumi Teiko.
Guide to Ishigaki Island
|Document title||Guide to Ishigaki Island|
|Date created (Western calendar)||May 1909|
|Date created (Japanese era)||May, Meiji 42|
|Author(s) / Editor(s)||Iwasaki Takuji|
|Name of publication||Guide to Ishigaki Island|
|Content||A guide to Ishigaki Island by Iwasaki Takuji, Director of the Island's Weather Station. The Koga Branch is summarized in the section on stores.|
|Repository||Okinawa Prefectural Library (Japanese Only)|
|Medium||Paper / Booklet|
|How to access||Follow the licensing procedure at Okinawa Prefectural Library.|