Stanhopea xytriophora ???
this was what I was supposed to have bought then it only had this tag on the plant, (X.I.S or X.I.5) and due to our relocation and subsequent minus 4’s and 5’s and the frosts that came with those temps, I nearly lost the plant, and have now got it back into flowering size plants, so putting a piece or 2 out there hoping that someone will flower it and help identify it and confirm the name either way.
The plant on offer is that shown in the plant photos and is a 150mm basket pot (with a slip over pot)
the flower photo is of what xytriophora is like.