This is a new, reproduction Delco Ignition Coil, Part # 1115264 for use in 1967 Corvettes with 427-390 HP, and 427-400 HP 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!