Vehicle jacks - ID required

[Tony Smith]

I would like some assistance identifying the applications for these jacks, please. I have a good idea on two, a little unsure on a third, and baffled by the fourth.

[Tony Smith]

Firstly, this jack marked "Auto Specialties" and "Made in Canada". It has no model number or capacity, but is smaller that the two middle jacks which are marked 4 tons. I suspect that this might be for a Sedan or light pick-up?

[Tony Smith]

Next are two jacks which I am reasonably sure are CMP jacks. Is there a certain brand or type used exclusively for Ford or Chev? Again, these are Marked "Auto Specialties" and "Made in Canada", but also have a model number , a 4 ton capacity and dated 1942 and 1942 respectively.

[Tony Smith]

The other:

[Tony Smith]

And lastly, a conundrum. This jack is smaller that the others, but is also rated at 4 tons. It is dated 1941, but has no country of origin. The maker's name is Shelley. It has a small "footprint" and has a plate measuring 7" x 8" bolted to the bottom, although I guess this is more for stowage and securing the jack than to provide stability when jacking. The plate has a chequered hatch pattern on it which looks like CMP cab flooring, but is neatly finished like a factory job with smooth edges and countersunk holes.

What country are "Shelley" from, and might this be an interim/ersatz Universal Carrier jack, as the base would fit neatly into a mounting bracket?

[Tony Smith]

Except for the jack shown in post number 4, the other 3 are for sale if interested.