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This is the right hand bracket P-7939-? bracket for the Solid State Bally Pinball of the 80's drop target assembly.
I could not find any documentation of the last number which signifies the right hand bracket. A left is a P-7939-1.
BUT this is the Modded version as has a section that is strengthened up and enclosed as this section typically breaks so this is an attempt to make the bracket last for a longer time and has a second spring hole.
These are printed in metal as they limit the over extension of the drop target and plastic will not withstand the impact. The originals were pressed / stamped metal and bent where as these are printed in metal. You will need to tap the holes with the appropriate thread to match the screw that goes through the switch block assembly - note run the appropriate drill through to correct the size to suit metric or imperial tap.