Found these separately in my travels around CT. Thin sheet metal stampings and has 2 rivets (approx. 1.30" apart) that stand off from the flat side. There is an eyelet in one of them and looks like the other had one as well. At first glace they look like the end plate of an old bike pedal, but they are way too narrow for adults... They would have had thru bolts to the other side of the pedal anyhow. One has a PAT OCT, 27, XX … theres a dent there and its not readable now. Any takers?