We can find this type of coerulea in Europe since few years but labelled "Phal. violacea coerulea" (not the Norton type).
The Phal. bellina coerulea I could see on french or US forum were this type (see below), with the color distribution of bellina (white with coerulea on lower sepals and lip) :
One of mine
2 from Ronan (Bechinolina here)
And a Phal. violacea coerulea (mine but the plant died), closer to your actual blooms :