This is a run of 50 Ideal Stock Horses. Painted in a Palomino Tobiano pattern with striped hooves, four socks and a blaze, they were available in matte or glossy finish.
Unknown if the 'Wendell - Roached Mane/Short Tail Version' was part of that run of 50, or was a separate run of one or more.
The model 'Big Rex aka ISH Thirteen' is a OOAK version of that same paint job.