I need your help

[SKI1019]

Picked these two sockets up today thinking they were S-K Chrome. When I get them home and look under magnification I see "Chrome Vanadium Steel". I think it's pretty clear they are made by S-K but I've never heard of this marking before. What's the story here? I've photographed them under magnification. They're 1/4" drive, 3/8" and 7/16", 12pt sockets with a dot before the size and after the CV marking. No S-K name or part number anywhere. TYIA, Steve.
https://www.garagejournal.com/forum/attachment.php?attachmentid=754048&stc=1&d=1523148291

 

[Oldtuleguy]

Definitely look sk

 

[RubiconJK]

Indestro made similar looking sockets and marked them "Chrome Vanadium". The dot you describe is possibly a small star which AA also indicates is an Indestro characteristic.

 

[SKI1019]

Indestro made similar looking sockets and marked them "Chrome Vanadium". The dot you describe is possibly a small star which AA also indicates is an Indestro characteristic.

Correct me if I'm wrong but everything I see from Indestro is marked "Chromium Vanadium". That's not how my sockets are marked. Also, I haven't seen anyone other than S-K produce a socket with this profile. I can pick S-K sockets out of a box by shape without reading the name. For some of the WWII experts, could these be of that era for military?

 

[d42jeep]

Steve,
My best guess is that they are prewar and contract tools similar to the tools S-K made to be labeled Brazil. S-K did a lot of contract sales in the early days. They are pretty darned similar in features to S-K Chrome 1/4” sockets and since during WW2 the metal restrictions were in place the Chrome Vanadium wouldn’t have been offered. I’m thinking 1930s. The first picture is my S-K Chrome set for comparison and the next is of my Brazil sockets by S-K. The military sets would have looked like the last two pictures.
-Don

 

[RubiconJK]

Correct me if I'm wrong but everything I see from Indestro is marked "Chromium Vanadium". That's not how my sockets are marked. Also, I haven't seen anyone other than S-K produce a socket with this profile. I can pick S-K sockets out of a box by shape without reading the name. For some of the WWII experts, could these be of that era for military?

Good point.

 

[DadsTools]

Steve,
My best guess is that they are prewar and contract tools similar to the tools S-K made to be labeled Brazil. S-K did a lot of contract sales in the early days. They are pretty darned similar in features to S-K Chrome 1/4” sockets and since during WW2 the metal restrictions were in place the Chrome Vanadium wouldn’t have been offered. I’m thinking 1930s. The first picture is my S-K Chrome set for comparison and the next is of my Brazil sockets by S-K. The military sets would have looked like the last two pictures.
-Don

From what I've seen, I think this line of though is very strong.

 

[Oldtuleguy]

Barring further evidence, that seems most likely