Help in identifying

[cavin722]

Can anyone help me identify this old wrench found in my grandfathers toolbox?

[gibsontool]

That's an alligator wrench, as to age and manufacturer I don't know but others on this site can probably   help you out.

[turnnut]

 are there any markings on that wrench ???    numbers or letters ???

[cavin722]

It has a large "3" near the jaws of the tool.  Cleaning the tool further I found "Rock Island Lines" on the handle.  My grandfather worked for international harvester at the rock island, IL plant.  Maybe the tool is related to working on the railroad?

[lptools]

Hello, Here are pics of a J H Williams No. 2 Bull Dog wrench, (alligator style wrench). This one just happens to stamped NYCRR. Overall length is 9-1/8". Regards, Lou

[Papaw]

#3 alligator wrench, and they were made by several manufacturers. The RR marking increases the sale value if you find a buyer interested in that RR.
Here is one I have- #3 Roebling

[bill300d]

i wouldn't be surprised if you found a W in a diamond shape on that wrench cavin722.
Sometimes it is hard to see.

Papaw
I also have a no.3 Roebling.