VTG Japan Mugs (4) in the style of Hornsea John Clappison NOS  READ

Seventies mod mug with graphic images contrasting with a dark background, very similar to mugs produced by Hornsea of England and designed by John Clappison. This mug has no markings and I believe it to be a copy, likely made by Otagiri Mercantile Co. from Japan. Mug is in great vintage condition with no damage. Measures 3 1/8" in diameter, 4 1/4" long including handle, 3 1/2" tall.