These ponies are marked Manley Toy Quest on the belly (“Toy” is written perpendicular to “Quest” and is hard to read, especially on the baby ponies). I haven’t seen any in-package specimens, but I have heard that they were sold with washable markers to decorate their bodies. I have found two sizes, a 6″ tall adult and 3″ baby. UPDATE: Still no in-package pictures, but I purchased a lot that included some accessories, including a saddle with cut-out stencil shapes for coloring:
Manley has also made Tootsie-pose and Ember pose fakies.
6″ tall adult:
3″ tall baby: