Looks a little like the plates that go under the bed cross-sills where the bolts holding it to the frame go. But it likely didn't come off your truck. Could be about anything.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.