Oncidium hybrid?

It has all the makings of a Cambria or Vuylstekeara intergeneric hybrid.
They were developed from Cochlioda, Miltonia and Odontoglossum orchids at the end of the nineteenth century by a grower from Antwerp, Belgium. His name was Charles Vuylsteke, hence the name. He wanted to bring easy growing, colourful orchids to the consumer market which was more or less exclusively dominated by Phalaenopsis orchids at the time. He was very successful in that and these orchids flood the markets here in Europe all summer. Many new hybrids of this type have been added since, like the ever popular Colmanara Wildcat.
Your particular hybrid could be anything and may be difficult to name if it came without a tag. And even then growers often give their own fancy names which are not always registered. Google for Vuylstekeara Cambria and take your pick.