I picked up 4 of these if anyone is interested.
I'll sell or trade them for some crescent sockets.
I have;
1/2" drive- 7/16", 11/16", 9/16" 12 pt
3/8" drive- 11/16" 12 pt
Got other sockets too if you looking for any certain ones.
(http://imageshack.us/a/img707/4530/sisc.jpg)