Ok, I know the pics are terrible but it's as good as it gets for now. In person I can tell that it is definitely a chicken or rooster. The same stamp is on both blades. On one blade I can read "CO" inside a circle, at the right of the circle. On the other blade I can read "SM" or "SA" at the beginning. The rest is worn away. The circle is under the chicken's feet. Of course, nothing to really go off of. But there's got to be a book or website that has known maker's marks. At least I have a partial mark! I'd love to know who made these, when and where.