Identify These Pliers, Please

[Provincial]

I picked up an interesting pair of pliers at the local Flea Market yesterday. They have round needle-nose jaws that have serrations on the outer surface of the jaw. They are spring-loaded to the closed position and squeezing the handles opens the jaws. They have what looks like a Parkerized finish, and are marked TB-4 on one side near the hinge pin. They are about 5" long overall.

I am thinking that they are military, perhaps for working on weapons?

 

[r_olson_06]

I have seen something similar for snap rings. The groves on the outside of the jaws is a dead give away.

Looking for the following Plomb Pebbles Wrench 3061

 

[slowtwitch73]

Round nosed pliers.. nothing unusual...