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hard to say but is that the size of a meat chopper?

well then keep on bidding and eventually you will score a good blade.
You can also check the antique stores in your area at least the prices will be so much more reasonable.

you can get meat chopper made by other well regarded makers,
John Greaves and sons,
John Wostenholm
Frederick Reynolds
just to name a few.
I personally do not understand why W&B is so popular ,...