[tflabo]

At mid lower left look for a white-like side profile of a horse with a 1880’s style bonnet on its head—no, not Camilla Parker Bowles or John Silky Pony Boy Edwards.

[Windflier]

At mid lower left look for a white-like side profile of a horse with a 1880’s style bonnet on its head

Still looking. Haven't spotted it yet.