This is a new, reproduction Delco Ignition Coil, Part # 1115087 for use in 1963 mid to late production, all engines and all 64 EXCEPT 250-300 HP Corvettes with 327 engines and standard (non transistorized) ignition
These coils are brand new licensed GM restoration parts. They have the raised lettering on the case and the Delco Remy logo on the top. These are a welcome addition to vehicles with either the wrong part or a "just plain tired" coil.
Many other GM vehicles use this coil, too. Check your books!