I have one of these too but on 4 inches across in diameter. You can find this in nurseries around Malaysia some times. Someone told me the name before but I can't remember. I think... if I remember correctly, it's P. xsethos. Here's a picture of the normal size ones we see in nurseries.
Casey, it's grown in Cameron Highland, in pure s. moss, under about (from my estimation) 70% shade cloth ad surounded by hundreds of Neps, orchids and other plants. The owner is a private collector.