2 favorite votes.  

Medium yellow.

Discovered by Johannes Felberg-Leclerc (Germany, 1921).

Pernetiana.  

Golden-yellow.  Mild fragrance.  Medium to large, double (17-25 petals), borne mostly solitary, cupped bloom form.  Continuous (perpetual) bloom throughout the season.  

Upright, well-branched.  

USDA zone 6b through 9b (default).