I'm with rugerguy on the silver eagle medallions. Late 1970's into the 1980's era & such.
But the black eagle ones,, almost look like a mis-matched set. And the picture isn't clear enough to see if they are for the XR3 or the XR3-RED grip frame. The picture ALMOST makes them look more like they are the XR3-RED ones. Looking at the necks of the black eagles,, the left picture,, looks like the neck is the "fatter" neck,, while the right panel looks a little bit more like the "skinny" necked ones. BUT,,,,,,,, look at the way the bottom edge of the wood is shaped,, just under the medallions. A different contour and edge shape. The left panel is more "square" while the right panel is a bit more "rounded" at the edge.