identify this floor jack?

[greenlizard]

Can anyone identify this floor jack? It is about four feet long, very heavy, side plates are 3/8 inch thick, has a t-handle with center knob release. Also, it has a handle locking rod that runs up the side of the pump handle. It is almost certainly US made but has no numbers, no tags, no nothing to ID it. I have found similar jacks via Google, but not with the handle lock.
Other than the handle "repair" shown in the first picture, it is in great shape holding pressure just fine. The blue paint is original so i suspect…. Lincoln? I'd like to find the model number for future reference.

 

[Hiball]

Its a imported 5 ton long frame jack, Not a Lincoln.

 

[greenlizard]

Its a imported 5 ton long frame jack, Not a Lincoln.

Well, @&&@!! Not what I wanted to hear, Mr Hiball. Thanks for the info. This one will go on Craigslist as soon as I find something US. It's actually a little big, anyway.
Again, thanks.

 

[Hiball]

Well, @&&@!! Not what I wanted to hear, Mr Hiball. Thanks for the info. This one will go on Craigslist as soon as I find something US. It's actually a little big, anyway.
Again, thanks.

It's not a bad jack, there's something to be said about jacks with simplistic hydraulic system.