Thai dancers (early 1970s)

My father seemed to travel abroad a lot during this period. He went to Thailand, which I had no idea about at the time. Zip zero zilch knowledge. This was before yummy delicious and wonderful Thai food had invaded. He sent me a postcard with these Thai dancers with incredibly long fingernails. I found them incredibly fascinating. Pack rat me surely still has the postcard somewhere. (Kathryn's basement would be my guess!)