Union pottery Co. Teapot with Pink Wild Rose (photo)

by Arlene Rasfeld
(Sarasota, Fl. USA)

This is an antique teapot with a pink wild rose pattern and stamped in brown "Union Pottery Co". Can anyone tell me more about it or what it is worth? Similar dinnerware with the same pattern was made later, but no stamp on the bottom. Thanks for any help. Arlene