need help identifying a piece of vintage art pottery

[wity38]

Hi Everyone

Hoping someone can help me identify a small planter that I have - it has a green glaze and is marked with what looks like BRIO or BIRO - I can't find any infor on it online and thought some expert on ebay would know.  I can't find any infor on it online

It's small and heavy for it's size

thanks in advance

Mark

[art.pottery]

Pretty sure it was made by the Zanesville Stoneware Co.  I’m unsure of the mark, they produced some pieces for other companies that then resold filled with things such as cheese or syrup. Might also have been a give-away promo piece for another company. 

[wity38]

OK, Thanks for the reply