Papilionanda Tan Chay Yan vs T.M.A.
 

Is it possible to be able to tell the difference between Papilionanda Tan Chay Yan and Papilionanda T.M.A. ?

If you look them up on orchidroots.com, they share one parent, and the other parent is a species. These two species are very different. The color range of both hybrids is very similar. It's subtle, but the upper petals in most of the Tan Chay Yan examples are reminiscent of the upper petals of V. dearei. Other examples look almost the same as Pda. T. M. A.

Thank You.
I will get from a person I know a topcut of V. Tan Chay Yan, according to him. But the real V. Tan Chay Yan is almost impossible to get in Europa Therefore mon question.