Well, for what it's worth, here is
'Mona' unboxed just now. Don't see the roots but the size of the new growths means watering starts today. She will have tight shoes but can probably stay in this pot if I clip it to something.
If I didn't know better I'd think your plant is a Dendrobium of some kind. The growth could be Catasetinae but the canes (Mona doesn't have any) say Den. Luckily there are pretty large overlaps in the care of many of our favorite genera.
You probably can't go wrong if you give it Cattleya level light and water it (is that sphag?) once or twice a week. I also like to use Superthrive or some other kind of transplant shock therapy on a plant like yours.