70s vintage Incolay stone jewelry box, blue & white jasperware style classical scene

Dated 1978 Incolay jewelry box, blue and white with a classical style scene - cherubs and a draped lady on a swing (Aphrodite? Psyche?). Measures 8 1/2" in diameter, about 2 3/4" tall, almost 2" deep. It's a little dusty, but has no chips or cracks.