some photos and everything works with the base plate having some surface corrosion nothing a clean up won't fix
and checking with the 1980-1 Bally Parts Catalog it looks like other machines within a few years of this era with a 4 bank drop target can use this as it appears quite universal with the solenoid able to be switched to the other side.
this will go to ebay for $50 so available here for $45.
