The second batch of photos were so much better...and P. lowii fma. aureum, indeed, it is!
This colour form was first described by Phillip Cribb, and the flowers of your plant fit to a 't' the photo, that followed his publication.
Your flowering is simply gorgeous, might we plead for a version of the photos 1 (plant in toto) and 2 (all the 4 flowers of the flowering)?!