Elaine, your orchid is Zygolum [Zglm.] Rhein Harlequin (Zglm. Louisendorf grex x Z. Artur Elle).
Mine is Galeopetalum [Gptm.] Giant 'Rhein Harlequin' (Z. Artur Elle x Glta. grandiflora).
Half sisters so to speak.
I wrote 'Rhein Hariekin' based on an illegible tag and I couldn't really check it because it is only a clonal name, not a species name. I'm sure it is 'Rhein Harlequin'. The only thing you can hope for on a tag these days is enough of a hint to start some diligent research. Isn't that sad?
I'll go back and change my post.
Jim
