HaegerAshtrays.com
No. R-1391
Square Ashtray with Four Feet 6" circa 1954-1955, Green Cascade glaze, photos from the collection of Allen Rothpearl
Note: R-1391 and R-1391-C appear to be the same design and an example marked R-1391-C is not known. R-1391 is listed in the 1955 catalog, and R-1391-C is listed in 1954.
Bottom reads: ROYAL HAEGER R1391 USA