Betsy,
your figure is made in "Chalkware".
I have the same piece, and yes, there are others, I have a horse and Indian also.
They have limited value, but that doesn't keep me from collecting them.
If you are actually interested in Anderson's cast work, a better investment are his ceramic pieces cast by Brayton Laguna Pottery in California. (He actually worked for them)
I had an opportunity to purchase a complete "Purple Cow" series and didn't; these are by no means small pieces. There are also dogs, hillbillies, horses and Disney characters.
Andy's Cow and Calf (there is also a Bull)
http://cgi.ebay.com/BRAYTON-LAGUNA-P...QQcmdZViewItem
The Purple Cow design is based on a poem by Gelett Burgess:
I never saw a purple cow,
I never hope to see one;
But I can tell you, anyhow,
I'd rather see than be one!