Rare Antique Japanese Military WW2 1940 Tokyo Ishikawajima Shipyard Lacquer Sake Cups
This is a set of antique Japanese military sake cups, with the words on the back "Tokyo Ishikawajima Shipyard" "15 Years Continuous Service Award". The words in the center are "Showa 15th Year" which is 1940. The Ishikawajima shipyard produced a number of destroyers as well as commercial ships. It seems to me that lacquer cups made from 1940 onwards are often without any decoration on the front - perhaps a result of rationing rules.
Size: 3", 3.75", 4.25"