Ford Script Flatbed (the actual bed) - ID Needed

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Hello All:

I frequent the Model A forum, but I'm in need of some help from the late '30s/'40s crowd.

I recently acquired an OT farm truck (1947 Dodge 1.5-Ton) from my wife's family that has a Ford Script flatbed on it.

I've attached a few photos of the bed. It's a stake-side that measures approximately 145.5-inches long by 87.5-inches wide.

The ford script appears on the back (as seen in one of the photos).

Are these beds a factory Ford part? ...or aftermarket?

Any way to determine the precise year of manufacture and application for my bed?

Any idea on value?

Is there a dedicated forum for Ford trucks of this era?

Thanks in advance!

-Jeff
Northeast Ohio