Can identify this tool

[painter777]

Looks like a handsaw tooth set to me

When looking at Jim's pictures:
At first I thought so also: Saw set pliers.
But then got to thinking maybe modified to use as a Sheet Metal Flange tool.. also?.....
...... Because of the top adapter.
Did a bit of reading about Saw Sets, nearly a 1,000 patents from the mid-1800's in to the late 1920's...... IIRC.

I believe with the different size saw teeth, Jim's looks to be adjustable for them.
I'll stick with Saw Set Pliers, which may be maker marked in between the handles..... maybe made by Diston.

This picture below is a some what similar looking pair in action:


Here's a link to misc makers on Ebay:

saw set pliers | eBay

PS: Still think (Jim's) have been slightly modified, but IDK

CH-P777