I think it is a interesting and subtly attractive Paph callosum. While it isn't a typical callosum, or typical var. sublaeve, there's really nothing else it can be - something along the callosum/barbatum clade. There's really nothing else that could contribute these characteristics to a hybrid, is there?
Is it wild collected? Is it typical of the population it came from? Is this flower even typical for this plant? If this is a first bloom on a small plant later flowers could be much different.
If it isn't collected, what did the parents look like?
Published varieties are often based on one or a few plants from a small area, not reflective of the broad variation even in a single population. It isn't realistic to expect every plant to correspond exactly to a published description, or match the pictures or plants you have seen before. Every seedling is unique. Every population is still evolving.