Naasra, additional research which we have added to References, shows that your photo most probably shows the correct 'Miralba'. The name 'Miralda' seems to be a transcription error of Nietner in 1880, who also added the carmine-red stripes to his description. Later author copied from each other (as usual).
I would date the rose at 1834, as various catalogues from 1833 and earlier do not mention it.
The white/pink-striped 'Miralda' in the other photos is certainly misidentified.
We would appreciate you posting your photos on the 'Miralba' page.