I aquired some no name Restrepia from Rob (littlefrog) and this one is flowering now. Based on the flower I believe it to be Restrepia ephippium. It seems to be the correct size, the synsepal is reflexed and it's flowering in spring. Plus the flower has the same overall look and color. The leaves also turn red in bright light.
I would like to hear from any of you that know more about Restrepia than I do (that means most of you).