Below are the Sega variations. We are showing you samples of scans so you can better understand what you are looking for. There are two types of mold variations.
The first type of mold variation is what we're calling the standard cartridge versus the grip cartridge. This is the sides of the cartridge you hold when placing or removing the game in the Atari. The standard cartridge has light grooves that do not stick out from the side of the cartridge (Spy Hunter). The grip has plastic molded that extends outside the edge of the cartridge (Congo Bongo).
The second type of mold variation is on the back of the cartridge. In the first photo, there is a blank rectangle molded where the second shows “Sega” molded.