All About Pocket Knives

I have three Bear and Bulls and one is a two blade and the other two are four blade. My uncle told me a story of a guy that had a one blade. He said they didn't make them. He seen the knife and someone had ground down one of the blades to make it look like a one blade. However someone else claims that they did make a one blade. Anyone have any info. of pics of one, if even exist.

maybe it was bull, I searched on the internet could not find anything except the 2 and 4 blade models.
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