Help: Spark Plug wire retainer

[Ricks72Z28]

Found this laying around and have no idea what is from...

[X66 714]

If memory serves me correctly, it would be a car or truck with ram horn manifolds. That's the best I can do....Joe

[bbbentley]

Old 283 motor

[clnovaparts]

Part number is 3814499. The group number is 2.251. Rear upper left hand side of engine. Mainly 1964 to 1967 small block.

[Ricks72Z28]

Thanks for all the info... does it have value to anyone?