Roundel of a triton fighting a centaur within a wreath, possibly a frontispiece to a collector's album

Drawn within a circular wreath of leaves and ribbons, a centaur (upper half man lower half horse) is holding a cudgel above his head and about to attack a Triton (upper half man lower half fish-tail) who is lunging at the centaur with a spear. Behind them is a figure open-mouthed with surprise. In the corners outside the wreath are 4 lightly outlined leaves or flowers. The entire design is within a square outlined with 2 black lines.