5/16"drive socket set?

[coolford]

This socket set was included as a gift in an e-bay purchase.  I thought it was 9/32" drive, but the extension and sliding bar both fit into a 5/16" square socket.  I'm not aware of 5/16" drive.  The set includes a double male extension, a sliding bar with slide containing both a male and female and 5 sockets one of which is 15/32".  The box is painted OD.  No markings anywhere.

[bill300d]

Not that it means anything in this instance but Stevens Walden are the only ones I can think of at the moment that made a box hinged on the short side similar to yours but that where the similarities seem to end.
Any chance of seeing the socket profile. It may help with id.

bill

[coolford]

Here is a sample of the sockets.  In the first picture, the socket on the extreme right is the socket from my collection that the drive fits, it is 15/16"  Just as I have never seen a 15/16" drive, I have never seen a sliding bar with male and female on opposite sides.  Always a first time.

[d42jeep]

I haven’t seen that odd drive size but the sockets look like early Indestro. The second set is Wards Riverside made by Duro/Indestro. The box is hinged on the end.
-Don

[mvwcnews]

Bud Bolt's tool museum at Oroville, CA ( https://www.boltsantiquetools.com/ ).   has a display board with a whole range of drive sizes & most of them have at least one maker identified.  I don't find a direct link to it on the top level of the site.  Time to go to church & after that 8 hrs of work time,

[coolford]

I was recently on Alloy Artifacts looking at Hinsdale and they made a 5/16" socket set that was not marked, but it is not a match.

[bill300d]

I'm pretty sure that the sliding T-bar is a Waldon, and those sockets Might be early Husky. Both were also makers of 5/16 drive tools.

[d42jeep]

I saw this picture of an early Indestro 1/2” drive sliding Tee on Alloy Artifacts and these are my unmarked 1/4” drive Indestro made sockets. I’m sticking with the 5/16” drive sockets being made by them.
-Don

[bill300d]

I see the resemblance now Don. Indestro it is.

[coolford]

I also now agree, although I have three old Indestro set and none match.  The sockets in this set do match the Indestro  shown by Don.