If it is highly fragrant, then 'Blanc Double de Coubert'. If not then it is more likely to be 'Souvenir de Philémon Cochet' (from which I can get no perfume).
I suspect there is world-wide confusion on 'Blanc Double de Coubert'. Because of its reputation for fragrance, we would all like to have it and nurseries may have sold another rose in its place. The references lurch from large hips, small hips, to no hips. The height varies as well, not to mention the parentage. (I note that Kamchatika is said to set a lot of hips.)
I am guessing, repeat guessing, that the parentage may have involved kamchatika; it sets no hips; is low; and has a perfume to knock your socks off. (It will be too low for your nose!)
Thank you Patricia, I have been pondering a reply. My plant is highly scented and constantly repeats like 'B D de C' it and has hips which according to Suzanne Verrier 'S de P C' does not produce. However, my plant is 11 years old and has made a spectacular rounded bush 2m X 3m but has not produced a single sucker although being on its own roots. There is almost no deadwood on it despite never being pruned.
Blanc Double de Coubert suckered like mad in the past for me, but that was on a peaty/sandy soil. Fragrance is "umwerfend" like the Germans would say. (knocks You over)
That is interesting Jay-Jay because I'm still not convinced that it is 100% 'B D de C', but the fragrance certainly is "verbluffend". Its one fault is that there is seldom a flower that does not have some brown petal or part of a petal otherwise from a distance it is beautiful. It was -10 last night and snow is predicted for today and tomorrow.
In our and a friends' garden the flowers were of the purest white... no brown petals. In fact I got that rose from those friends as suckers. They boasted about the astonishing fragrance. The rose surrounded their house and driveway and in the summer whilst sitting outside and enjoying a self-cooked Indonesian meal, we were surrounded by that BDdC scent and the sound of clocking and picking Brahma-chickens accompanied by their impressive rooster. Over here right now, it's snow-white with a blazing wind (it was sunny this morning, but now cloudy) and a temp below -7°C. Tonight we'll get -10 too.
It's very pale pink in bud then pure white and like your friends' very scented pure white but with some brown bits when the flowers are fully open. By-the-way I am rather envious of your Indonesian meal. My father worked for a Dutch based company and my parents' best friends were a Dutch/Indonesian couple who used to cook really delicious food. Many of their friends were Dutch, I grew-up on drop and hagel slag!
I don't grow it now, but I remember my BDdC (which didn't set hips) had rather bright almost light green foliage that complimented the flowers beautifully. Beautiful scent too. Your photo shows rather darker foliage - maybe the difference is cultural, or even photographic - but I don't remember mine being quite that dark green. I don't remember mine having regular brown marks on the petals either.
I think it could be a bit of a fault, I have never seen much thrip in the garden or pollen beetles, or maybe because the climate here is cool and wet although this year so far it has been warm and dry. I've posted a picture of the rose. It is twelve years old has never suckered or been pruned and has very little dead wood.
A stunningly gorgeous rose. For about 5 minutes. Then those perfect white blossoms start turning brown. It was bad enough for me to get rid of it--a shame, because it really is beautiful at first.
