Chinese Yixing clay teapot, vintage pottery tea pot w/ leaf & branch, animal figures

Used clay tea pot, Chinese Yixing? It's marked as shown, but we know very little about this type of pottery, and can't tell you very much about it - we have no idea as to the maker, or it's age.

It measures about 7 1/2" x 4" overall. The strainer basket is broken as shown, though both the pot and the lid are in good shape.