This 3" old pocket knife with two blades is marked West Cut #331.
Why do old pocket knives have two blades? - Quora
How To Close A Pocket Knife #shorts
Replaceable Blade Knives: Options To Always Keep You Sharp
Types of Kitchen Knives: Parts, Materials, & More
COAST DX342 1919 Reserve Limited Edition Double Lock Folding Knife
Barnett Custom Knives
Winchester Knives
101 Uses for the Pocket Knife – Knife Depot
Old German Knives
11 of the Most Popular Knife Blade Types and Uses Explained