This is a top quality vintage style adjustable wrench marked "J.P. DANIELSON CO. INC.. JAMESTOWN N.Y. 10 IN BET'R GRIP FORGED STEEL".  Although this wrench is in very nice shape, it does have a factory flaw in the casting.  There is a hairline crack right at the outer end of the knurl window.  We tested this wrench under stain and the hairline crack didn't widen or crack further.  If this wrench was abused it stands to reason that it would show in the jaws, but the jaws are in great shape, move smoothly and are straight and parallel on this heavy duty model adjustable wrench.  No rust, not bent, useable, clean. Some minor pitting, overall a straight wrench.