Japanese Wind God, Fujin, cast iron ashtray

This cast iron ashtray is roughly 7" square x 1" high and weighs 2 lbs. It commemorates the Japanese wind god, Fujin. I have seen a couple of versions of this ashtray, some with molded grooves to hold cigarettes or cigars. Stamped "JAPAN" on the back.

In good shape I have seen this one sell for over $100 and they are impressive hunks of cast iron. More than I will ever pay for one, for sure. I found this one a few weeks ago severely rusted with a deep crust of surface rust for only $7 so decided to see if I could save it. After hours of buffing with my Big 45 metal cleaning pad and some Mobile 1 motor oil, I was not making much headway, so I finally decided to just fill it with Mobile 1 and let it sit for several days. That worked surprisingly well.

Though severely pitted, I am slowly getting it cleaned up and saving what original finish is salvageable, but in addition to the rust I have to work my way through two layers of paint (red and black) that someone applied to it. The original finish was a smooth black finish, possibly similar to what was applied to iron teapots of this period. The bottom still has the original finish largely intact. I will keep at it and update my images when I finally admit defeat. I may just paint it when I am done cleaning it as it doesn't have any collectible value as is.

No idea which foundry made this.

https://en.wikipedia.org/wiki/F%C5%ABjin