The plants are way too big to be a praestans cross.
Here is the Yang-ji Apple I bloomed last month, made with a standard phili rather than var roebelinii. Overall structure is pretty similar to my eye other than the petals. The staminode looks right on Ray's plant
Not sure if this was a praestans or regular glanduliferum x anitum since the two are so mixed up now but the staminode and overall look are very different.