Yep, I have a couple of them, I think both are Susan Bates nylon not plastic needles. Boye might also have made them too. You may be able to find some on ebay if you'd like to get more. I agree, they're great needles. Mine are size 13 and 15, I did have 10½s but they kept getting chewed by the cats and would split and splinter. That happened to 2 of them.
sue- knitting heretic