This is an antique Japanese military sake cup, decorated with a map of Korea, with a few cities highlighted. The words on the map (aside from place names) are "Commemoration". The words on the back are "Korea Garrison 32nd Infantry Regiment 1st Battalion 4th Company" and a mark in the center for the maker. The name used here, "Hanguk" (or Kankoku) was used in the period of the Korean empire. After annexation in 1910 they used "Chosun" again so this dates the cup specifically to this short period of nominal Korean independence. 

Condition: There's a crack in the base of the cup, please see photos. Otherwise in very good condition.

Size: 4.25" across