An unusual knife. Can anyone help in identification, etc?

I picked up a knife that to me appears to be a bit on the unusual side.  Photos tell the story better than I can.  The tang is stamped with KB in a circle.  Here it is:

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    George R Naugle

    About  as close as anything else, Jan.  You may be right.  Thanks for the insight.

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    George R Naugle

    Could it be a "rope knife?"

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    Kevin D

    The only 'rope' knives I have heard of, are sailor's knives.  But the ones of those I have seen have a little more of a 'cleaver' like blade.  That pronounced hump on the spine is throwing me off.