Identifying an old foothold trap

[TitusFord]

Good evening folks!

I just found this trap in a crick behind my house.
From what I can tell it's fairly old and looks to be made of iron? The spring is black and has a wood grainy look to it. I found it set open as it is in the picture but it was stuck in some rocks and mud.

I am fairly new to trapping but have always loved the history of it and I've read many a book about the mountain men days of trapping. Finding an old trap has always been on my bucket list and I work in the woods so I am always lookin. A coworker of mine has found some but I never have till now! If anyone has any pointers on identifying or aging such a trap it would be appreciated!
I understand it's pretty far gone and identifying it could be a pretty slim chance.

Thanks y'all!

[Humptulips]

Pretty far gone but I would say from the size, jaw hinges and trigger that it is a #4 Newhouse. Can't be sure, you need a readable pan to be sure.

[TeacherMan]

Half of a #4 or 4.5 Newhouse. The old square bolts are what I’m going off of.

[TitusFord]

Pretty far gone but I would say from the size, jaw hinges and trigger that it is a #4 Newhouse. Can't be sure, you need a readable pan to be sure.

I reckon I should mention the inside spread of the jaws are about 6"x6" if that helps narrow anything down.

 From looking at some pictures online it does look like a newhouse!

[GWP]

Neat find!