Bought this bargain few months ago without ID and blooms. Since the very first day I got this it's placed and grown under almost full sun with bit shade from leaves of my mini-rose. It gave me 2 spikes.
Really nice. I would guess it's a Colmanara which is a complex intergeneric in the Oncidium alliance.
It actually looks pretty like Colmanara Wildcat 'Bob Cat' but without an ID you can't really know if it's the Wildcat hybrid and certainly can't know if it's the 'Bob Cat' cultivar... but it's got to be something pretty similar from what I can see.