You may well be correct, as I have had this orchid for a few years, which would coincide with the 2011 registration (which was apparently not accepted, at first, due to M. Sunset) and Orchideen Holm is local. They deliver to many garden centres and that is where I purchased it, not from a grower. I'm not sure, but suspect it is a seedling, as I selected it from a group of extremely similar, but not identical plants. Still, could be a clone or part of a clonal group (propogation). Bottom line, I took the tag as being correct and all references in the internet supported this.
Need to do a bit of sleuthing.