HaegerAshtrays.com
No. 935
Ashtray ≈4½" circa 1979, Blue glaze, photos courtesy Jessica Taylor on Facebook's Marketplace
Note: 935 and 935-X appear to be the same design and an example marked 935-X is not known. 935 is listed in catalogs 1978-1979, and 935-X is listed in 1978.
Bottom reads: © Haeger 935 USA