Vintage Ceramic Buffalo Bison Coin Bank-Rare!

I have not been able to find another ceramic buffalo coin bank through online searching and believe this one to be rare.  There are no identifiable maker’s marks or stickers so I really have no idea of the manufacturer.  Similar bison figurines WITHOUT the coin slot seem to be hand painted and from Japan.  I’m guessing this might be the case with this one too.  This would be a great addition to an existing coin bank collection or pair well with southwestern decor!
Measurements:  Approximately 6 ½” long and 4 ½” high.
Condition:  Preowned good vintage condition.  I did not see any cracks, chips, or repairs.  Due to the hand painted nature, I did see some paint color misplacements such as a black spot on brown, etc. and areas of lighter and darker paint.  I believe both horns are in good condition although one looks to have a differing carved shape.  It feels smooth and looks painted the same though so I think it is how the horn was originally constructed.  I took close up photos though so you can make that determination for yourself.