This 1920 tin horse and rider has a tab to bend back to allow it to stand up. There is another die-cut version with a slightly different silhouette (the tail is the most noticable difference) and a shorter, narrower tab. Several different designs - various riders and horses, including an Indian - can be found. They are all flat, plain on the back, and not marked as Cracker Jack prizes. Since this stand-up was used as a Cracker Jack prize prior to 1930 when detailed records began to be maintained, the manufacturer is not known.
Cracker Jack ads can be very useful in determining the age of a prize. This ad from the The Youth's Companion of Feb. 26, 1920, is a good example:
The first prize that is noticeable is the top that the boy on the floor is spinning. But look closer, just to the left of his head on the table next to the floor lamp:
As shown in this detail from the ad, it's the horse and rider; so we now know that it was used as a Cracker Jack prize in 1920.
This prize is not to be confused with Pinto the Pony from the 1950's Magnetic Circus shown below. Though the evolution is obvious, the horse ane rider from the magnet set are not flat, but embossed, and obviously there is no tab. Instructions on the card say to bend the legs to make this version stand up.
Stupo the Clown from the Magnetic Circus is also often mistaken for a Cracker Jack prize. Like the horse and rider, the clown did have a forerunner that actually was a Cracker Jack prize, but it has a different silhouette, with arms that arch or bow upward, and it is painted on both sides, unlike Stupo (see below). There are many variations of Stupo and his clown costume, but none are Cracker Jack prizes. By the time these were being made in the 50's, meticulous records were being maintained of Cracker Jack prizes used, and there is no documentation of this later version of the clown nor Pinto the Pony having been used by Cracker Jack.