Thanks to both of you,
Looking at these photos, either the C. ancyrensis or the C. chrysanthus 'Goldmine' or possibly 'Goldene Sonne' look like they might be it.
Unfortunately, the first source of ancyrensis I found (Brent and Becky) states it can grow to 12" (30 cm) which is way out of line for size. Haven't found any reference to size or a USA source for the chrysanthus cultivars, but I grow 'blue pearl' and the size is about right.
George