I have two or three and one of them is spiking now. The first one that
bloomed wasn't nearly so pretty as this one, but I like it anyway. The one
in spike now may be more like your blooms. I hope so!
The one in spike now is primulinum album 'Sunlight' x delenatii 'Saturina'. The
other one I bloomed is primulinum var flavum 'Sehua Glow' x delenatii 'Dumbo'.
The other is just plain old Deperle on the tag. Might your plant be one of these crosses?