On Friday, I saw a kijiji ad that was mere minutes old:

The location was only 10 minutes from me and although no brand was mentioned, enlarging a photo allowed me to catch a glimpse of a corner of a label and I knew what it was. I emailed the seller & told him I'd take it...
I had to work unexpectedly on Saturday, so I could not meet in the morning as the seller had proposed, but I swung by on the way home in the evening and scooped the set.
It is a 1"-drive Gray XH16 Socket Set. I have
absolutely no use for this, but I had to have it even though dollars are scarce! I figure I can always sell it for more than the $100 I paid...

Here it is with it's 1/4"-drive cousin sitting on top:

It runs from 1-7/16" to 2-1/2":

As mine is a Gray, it is from after 1961, but this Gray-Bonney catalogue shot from 1961 depicts the set:

The set is still available today, but the 17" extension is no longer included in the set:
http://www.graytools.com/toolcatalogue/?page=product&name=15%20Pieces%2012%20Point%20Standard%20SAE%20Socket%20Set&itemNo=1120&s_filter=&recPage=9&startRow=1&pageNum=1The 2" socket was missing and had been replaced with a Snap-on LDH643. For some reason, this size doesn't appear on Snap-on USA, Canada, UK, or Australia, but it's listed on the Mexico site!
http://www.snapon.com.mx/producto.php?q=4000_LDH643Whoever owned this set needed a deep 2" socket because a second socket has been quite expertly welded onto the LDH643 to make it longer! (Is there any way for me to remove this welded portion?)
The wear is minimal on most sockets, but in addition to the 2" size, the 1-1/2" size has also seen quite a bit of use and in an application that must have been recessed since the outside of the socket has been so worn that the name, size and model number is work away entirely. The wall of this socket is visibly thinner than the others!
Here is the 2-1/2" socket with the 3/16" socket from the 1/4"-drive set:

And here it is with the 1/4"-drive ratchet:

LG is amused. :)