Rectangular bronze item with raised squares and mounting hole.

[PetesPockets55]

So I was at a monthly meeting last week and there was a demonstration given about metal detecting. The gentleman brought in a handful of artifacts he has found on a local Ft. Pierce Fl. beach (and up north). He asked the audience for help ID'ing one of them because he didn't have a clue. When I suggested posting it here because of the depth of the members knowledge, he said he didn't know anything about posting but agreed to let me.

So here goes:
Composition- Bronze
Weight- ? (No scale)
Markings- None that I noticed but there was a hole at one end (apparently for mounting to wood as the hole was tapered)

The size is approximate as we had no measuring device.
Width- +- 1.625 (1-5/8")
Length- +- 8.125 (8-1/8")
Thickness- +- .25 (1/4")
(Excluding the pointed part of the squares)
Max. Thick.- +- .50 (1/2")
Each individual square is approximately 7/16"

Thanks in advance for any help or suggestions

 

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[Beshires1]

my first thought was an old wood burnishing tool...

 

[PetesPockets55]

For scraping wood?
Sorry but I'm not sure what a burnishing tool does.