Lucky you! All we seem to get is stray kitties It could be Brassidium Fly Away 'Miami', although maybe not possible to tell for sure. Mine has been in bloom for some time and now has another spike ready to bloom so it is the season for it and the plant looks very similar.
Congratulations! No idea on the ID, however, I sincerely hope the neighbors don't start dropping their unwanted orchids on my doorstep! I am desperately trying to lighten my benches to make room for new Pleurothallids... I have a lady at work that wants to give me her Phal., she cornered me today. How can you say no?