Can anyone help me find out anything about the history of a japanese bowl that I have had for about 30 years?

I have searched books and the web but have never seen anything else that resembles it. I think it is stoneware and I bought it in an antiques auction in the 1980s. It is about 10" wide at the top and tapers to a pedestal of about 6" in diameter. The main body has a crackle glaze and it has a band of dull brown with tooling top and bottom. The outside has detailed decoration of what seem to be samurai warriors carrying spears on horseback and these are brightly coloured in what looks like an enamel finish. The horses have really wild eyes! Inside it is quite plain appart from a white egret in the centre. I love this bowl but would love to know more about it, where it came from and what age it might be. There was no information about it when I bought it at the sale so if anyone can help I should be most grateful for anything they can tell me.