Bay with gold bobs and tail ribbon, no black on the legs, 4 stockings with grey hooves, and some models had eye whites. From 1958-1961, this model was released in a glossy finish with no muscles, and around 1962 the model was re-tooled to include muscles. The muscle version pertains to the amount of muscle details the model has; whereas the no muscle version shows a very smooth surface to the model. From 1963-1972 he was released in matte finish with muscles, and also had pink hooves instead of the grey on the glossy models (unsure if there are matte models with grey hooves). Most eye whites had ended by 1969.
Early models had no Copyright Stamp, then the round Breyer Molding Co Stamp was added. Both glossy variations have had the round Breyer Molding Co Copyright Stamp. Typically around 1970 the USA stamp was added to this mold; however, still researching if this version ever got that stamp.