Hi Ewbie,
Please let me start by saying that I believe that is impossible to ID a NoID hybrid. However, in your case, I'd stick my neck out and say it is probably Vanda Tan Chay Yan.
This hybrid was one of the most desirable in the 50's and is extensively grown in the Far East. As for proof, you can buy that in 999 Fine Silver from the Singapore Mint
http://www.singaporemint.com/product...roducts_id=766
or as a postage stamp
http://www.orkideas.com.br/colecoes/...ternac_01.html
right at the bottom of the page.
But for the serious, just Google for Vanda Tan Chay Yan.
Weng