DesertGold/Moorcroft: https://www.desertgold.us/moorcroft/Moorcroft.html
HIBISCUS Cobalt Blue Spade Dish Approximate Dimensions: 5.375" (13.6525 cm) long 4.625" (11.7475 cm) wide 0.875" (2.2225 cm) high Circa: 1970s