Pretty sure I have a couple of the Craftsman 3/8 deep six pointers with knurling on the top. Probably got them in the clearance bin or as exchanges. I'm sure I have mixed sets of the short sockets. I don't think that top or bottom knurling indicates any difference in the quality of the socket. I like the top knurling but the bottom knurling might be a cost cutting production change because there are fewer different sizes at the bottom than the top.
Here's some pictures of the types of sockets I need.
* Craftsman 3/8" drive 6 point v deep 19mm socket with knurled top.
The standard size socket I measured was 1" high.
* Craftsman 3/8" drive 12 point v standard 9mm socket
* Craftsman 3/8" drive 12 point v standard 10mm socket
* Craftsman 3/8" drive 12 point v standard 12mm socket
* Craftsman 3/8" drive 12 point v standard 12mm socket
* Craftsman 3/8" drive 12 point v standard 14mm socket