This is a copy of a well-known Illions horse.  It is part of the "Carousel Memories Americana" Collection from Willitts.  The run numbers on these are 9500 for the brass base, not sure what the others are/were.

This piece came with several different base configurations.  I have personally seen it with a rectangular music-box base, and the rectangular brass base (the "Group II"-type base).  It may also have been offered on other common Willitts bases such as the brass oval and the oval music-box.  The piece is about 6-7" to the top of the pole.  There will be a coin set into the base of the "Carousel Memories Americana" series of horses to identify them as special editions.

The average price of this piece when new was $40-$65.