10 favorite votes.  

Medium yellow Hybrid Tea.
Registration name: Clara Curtis

Bred by Alexander Dickson II (1857-1949) (United Kingdom, 1922).
Introduced in Australia by Hazlewood Bros. Pty. Ltd. in 1923 as 'Clara Curtis'.

Hybrid Tea, Pernetiana.  

Golden-yellow.  Reverse striped carmine.  Strong fragrance.  Very large, very double, borne mostly solitary, high-centered bloom form.  Blooms in flushes throughout the season.  

Few or no prickles/thorns, lax.  

USDA zone 6b through 9b (default).