Those weird Diamond Adjustables..

[ganymede]

The ones that aren't Crescent style or monkey wrench but may be an auto wrench except that they're a little too thick.
Anyone know when these last could have been made ?

 

[Hawk]

Diamond Horseshoe Monche (Monkey) wrench have been made at least since the early 1900's and possibly a decade earlier.

And still made:
http://www.cmsurplus.com/pagedisplay.aspx?pid=504963

 

[bluebolt]

We still use them in the Air Force on planes and they are still known as Ford wrenches.

 

[Farmall 1066]

Yep, known as a Ford wrench or Auto wrench. Originally supplied with early Fords to adjust water pump packing.
I have 2 big Diamonds, one has had the handle torched off at about 8", and another smaller one. They are the cats *** for hydraulic fittings...sort of a one size fits all angle wrench.
Also useful for square bolts & nuts, something I encounter on a regular basis, working on old farm machinery.

 

[ganymede]

Thanks guys. I would never have guessed they still made them.