Thanks Judy. I’ve added Cyberose contribution to the ‘Galatea’ references.
Are you completely happy with the colours mentioned in the ‘Galatea’ references, as matching “Not Moonlight”?
I rather think ‘Kathleen’ might be a better match. I grew ‘Kathleen’ in a terrible spot for years but have now liberated it and will be able to compare it with “Not Moonlight” by about Oct/Nov, 2022.

Later edit: nope, don’t have to wait for spring. ‘Kathleen’s hips are much bigger and a different shape to “Not Moonlight”.

Judy: I have grown Moonlight for 30 years - one acquired from Melvilles, which has light green wood and flowers that tinge pink when aging.

It sounds like this rose is the same as “Not Moonlight” which also emanated from Melville’s nursery. It has green wood and pink tinged flowers.

I did query this rose with Melville Nurseries in 2004 and received the reply:
“Please note that the rose Moonlight that we grew and sold in the past was named by David Rankin* the breeder of the rose from Renmark in South Australia. We no longer grow this rose for sale. We do not know whether the Rose you have purchased is the Moonlight without seeing the plant”
[*Probably David Ruston]
……….

Judy: and another purchased from an eastern states grower which was slightly different,

I can’t comment on this “slightly different” rose.

The original 1913 ‘Moonlight’ had new canes, and foliage, of claret red. References which mention this trait are 1914, 1923, 1924, 1930, 1936 and 1971.
Cass’ April 2003 photo “near San Francisco, California” shows this redness. I have seen the red on my ‘Moonlight’ bush (provenance Viv Allen, Carmel-> Lynne Chapman-> Billy West in 2002) but the redness soon reverts to greyish wood.

Judy: and also grew Autumn Delight (purchased from Ross Roses) for 20 years before it succumbed to the heat and dry. Autumn Delight flowers were 21/2 times the size of either Moonlight and beginning buttery yellow fading to white. The plant flowered best in Autumn - hence the name- and was a low growing(900mm) spreading plant in my growing conditions.The buds were pointed and distinctly buttery yellow. Stamens yellow.

Thank you for your feedback on ‘Autumn Delight’.
I too grew ‘Autumn Delight’ from 1997 to 2013 (provenance Zephyr Brook 7-36) but it succumbed. I took no photos of this bush. Looking closely at the HMF photos of ‘Autumn Delight’ they do appear to be more creamy yellow in the centre than “Not Moonlight” is here.
I note your buds were “distinctly buttery yellow”, which conflicts with the Botanica reference which says the buds were apricot yellow in colour, as does G. S. Thomas. I’ll add those references now.

Open your account / Member Garden / Plants Grown….and take it from there.