A very nice species to grow on a mount. Note that this species is non-resupinate, so the little round openings that you see there are actually the back side of the labella.
Paph. (Sunshine Glory 'Silver Elf' BM/JOGA x niveum album '#1')
It's too bad it's not registered. It's a very nice little fellow. I finally had to repot it into a 4" pot this year – and this year, it carried 3 spikes!