Rosa,'Diamond Jubilee'
New Zealand issued a series of stamps named GARDEN ROSES in 1975.
I only have this one.
The photo was taken, one year in Kiato,Peloponnese, of an un named yellow rose flowering at the end of November..
I rather think my friend was holding an umbrella over it so that I could take the photo.
There are plenty of references to roses in THE MEDITERRANEAN GARDEN, even one to
Rosa ’Diamond Jubilee’ in issue number 42 October, 2005
ROSES FOR THE MIDI, FRANCE by Members of the Languedoc Branch