Executive Ashtray 14" circa 1957-1965, unitentified glaze, photos courtesy Ready Goods Company on eBay

Note: R-1755 and R-1755-H appear to be the same design and an example marked R-1735-H is not known. R-1755 is listed in catalogs 1958-1965, and R-1735-H is listed 1957.

Bottom reads:  ROYAL HAEGER R1755 USA