I happened to come into possession of this thing recently. I believe it is a traditional Japanese War Drum that was customized with the addition of exquisitely detailed dragons and the Samurai symbol. Out there is someone who would really like to have this. If they give me $1,000,000 for it I will donate it to stopping the disaster at Fukushima from destroying the planet.
It isn't a Japanese war drum . It is a Korean Yong Go drum. like this one.