Just a fantasy, a non-Paphiopedilum...
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I reasked the owner(and now seller
) and this is the form from Sabah with dark markings. The flower is quite massive, and nothing close to a cornu cervi. Fewer flowers per stem, the plant has overall a bit narrower leaves at the base, and usually finishes its flower spikes by a keiki. The seller had 7 different jungle ones that he propagated by keikis. Apparently it is therefore a real pantherina.

I reasked the owner(and now seller