It
looks like a faint version of phal equestris formosum but the lip on formosum is deeper in coloration. Here is a picture of Phal equestris formosum 'Montclair' - the photo below is couresty of orchids.com -
It looks more like this phal equestris from Paramount Orchids -
http://www.paramountorchids.com/jpg/...equestris1.jpg
Here is a pictorial gallery of Phal equestris -
Phalaenopsis equestris
Note - the names attached to the photos are of the photographer and are not clonal names.