Its not Bulbophyllum eberhardtii/longiflorum as that plant has rounded petal tips. I wondered what the plant looked like because it does look like Elizabeth Ann 'Buckleberry' - the petals should be very long (12 inches long and almost as wide). Another possibility is B. rothschildianum (mine looks like a smaller version of Eliz. Ann) but maybe yours is a young plant.
This is 'Elizabeth Ann Buckleberry'
And current blooms.
