Quality white hankies have windowpane self stripes and proper hem stitched edges. I acquired these still in the original packaging but I had to take them out to launder them as they had discolored with age. Now 99% white as new! I have enclosed the original packaging for your interest. Made by Nile, 1950s - 1960s.
Approximately 42 cm square (17")
Very good. One has a couple of tiny spots, another has a very faint mark.