I figured this might be of interest to some on this forum: this is a first generation modern x gallica rose with pretty distinct spotting and marbling on the petals. I have a hypothesis that this, at least in part, comes from overproduction of pigment that more delicate petal structures seen in OGR or species have trouble holding. Unfortunately this is not the circular watermarking that some Gallicas have.
The lineage is Duchesse De Montebello (in commerce as) × Miracle on the Hudson