What the pottery duck?

[crcrumsey]

Hi, all. Found this cute pottery duck a couple of weeks ago, assumed it was Brush Pottery. But turns out, the shape doesn't look right (back and tail are wrong for the 1940s Brush ducks). Doesn't seem to be McCoy. Also checked Camark and Niloak with no luck (with limited resources).

Any ideas or suggestions? I've included pics of the bright yellow duck from the side (4.75 inches long, 2.75 inches high at the top of the tail) and the open foot. 

Thanks for looking! George