Dear Dave, no markings on the nakago. And Hamfish, if it was made by a local smith in downtown Batavia, I guess you could call it a 'repro'! On Japaneseswordindex.com I found this text:
"By 1945, there were numerous "desperation" end of war varieties of shin-gunto being produced both in Japan and in the areas of Japanese occupation. These swords have plain copper, brass or iron mounts, simple wire tassel loops, low grade brown/tan/green ito, and poorly constructed black painted wood saya, some with leather scabbard covers. Swords of this type are all of the poorest quality, made from low grade materials. None have traditionally made blades. They are swords in form only and of interest only as historical artifacts."
Looking at the materials of my sword, how it was constructed and where it allegedly came from I figured it may have been produced locally in Indonesia.