Shelbylex is right: glaziers pliers. This is from the 1939 catalog, but (despite being called “new” in the description) yours may be older than that.As for the Utica Pliers, they say "No - 2" on them, and they do indeed look like the Duck-Bill pliers you provided a link to - but with the exception that the smooth jaw surfaces do not meet except at the very tips. I'm wondering if it might be for sheet metal work?
Is there a forged-in 3-diamonds mark on the inside of the handles?My reasoning: Your pair has the model number, but not the length (No.2-8), which was pretty universally applied to all models afterward. The forged-in diamonds mark inside the handles (if the little glint I’m seeing really is that), is also an inidication of earlier examples, later dropped from the forging process, or polished away. I would expect a textured handle grip pattern with V-shaped terminations on pliers of the age I’m thinking, BUT maybe the glaziers pliers retained smooth handles throughout their existance.
Similar-looking pliers with teeth are usually for processing animal hides. I’m sure you can use your pliers for bending sheet metal, but parallel-jaw locking pliers will do a better job.
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