OK - so we go with the Guarianthe Guatemalensis. I've googled this and can agree that it is most likely the correct name - thank you all for the info. The size is great - that is a six inch pot.
Here it is as I would call it - in all its glory, but "warts and all" so definitely NOT for an expo, just my own enjoyment. Guarianthe by dougbraz, on Flickr