Dug out a schrade walden with 163 stamped on the reverse of blade and has timber handles..great condition,while not brand new..Have not seen one serrated before.How common are these and are they collectable..Thanks Wade:
Schrade knives with the Wonda-Edge are not that common. The patented type serration was revolutionary in it's own way, but it just didn't catch on.
The idea of adding scalloped serrations to one side of a knife blade was patented by Albert H. Baer, USPTO utility patent #2,825,968. The patent was filed in September of 1956, and issued in March of 1958, and assigned to Imperial Associated Companies, Inc. The name Wonda-Edge associated with Mr. Baers invention was trademarked as well, #72,023,627, in February 1958.
This Wonda-Edge feature was used for the next few decades on a variety of hunting knives, pocket knives, and horticultural and sampler knives. As the assignment of the patent indicates, knives of all three of the associated companies, Schrade Walden, Ulster, and Imperial at one time or another made use of this patent.
Serrated blades were not unheard of prior to the Wonda-Edge, but they more resembled saws in that they were toothed, with angular serrations, and usually symmetrically grooved evenly on both sides. Mr. Baers invention used rounded scallops to increase the length of the cutting surface, and placed the scallops all on one side of the blade to facilitate easy sharpening from the back, or plain side, rather than trying to sharpen the scallops themselves.
The very earliest mention I have found of the use of the Wonda-Edge feature is on the Schrade Walden 1957 price list. I last see them mentioned in 1961. A look at the production reports from the period reveals that the WE blades did not sell well, and thus are uncommon today. But the idea is now quite common on steak knives around the world.
Collectable? Collect what you like and like what you collect. If you are looking to unload it on eBay, don't expect it to bring a large sum, even with a great writeup.
Michael