vintage Glasbake casserole, blue & white Grecian classical jasperware style

Wonderful vintage Glasbake casserole in a pattern we've never seen before! It's something like the classical Greek and Roman patterns by Jeannette (maybe a go-along piece?).

The dish is jasperware blue with a matte colored finish, and the lid is clear glass. It's a 1 quart size (the bowl is about 7" in diameter). Both pieces are in very good condition, no chips, very little wear or scratching.