Very nice! You never know just where the Wonda-Edge serrated (Schrade called "Scalloped") blades will turn up. They were first listed in the catalogs in 1957 on the 145WE,147LWE and 148LWE rigid blades, 293WE 3 7/8" Serpentine two blade Jack. In 1959, they added the H-15WE and listed it thru 1964. I never found the 137LWE listed, but I have one. None of the Wonda-Edge knives were listed after the mid sixties. But... we know the 89OT had the serrated blade. I did not find the rope/hawser knife listed with the Wonda-Edge, but they obviously made it! Trademark #72023627 02/11/1958 was the WONDA-EDGE mark.
Codger