World War II era Japanese Navy Cap

This is a World War II era Japanese Navy Cap. This cap is in good condition, although there are some sweat stains and marks from age. Additionally, the anchor emblem that would have been sewn onto / into the front of the camp has come off in some places. Additionally, there are some small rips and marks here and there, and the string that would have held the back of the cap together is not present. There is a tag inside which has Japanese writing upon it, but I am not certain what it says. It does appear, however, to be some information regarding the manufacturer and size.