I have an ST-V game with soldering not done by hand. I have seen others online with the same thing saying it might be a bootleg but they weren't sure. There are not eproms on the board, but it doesn't have the SEGA label as well. Was this a common practice to do? I thought they were really just done by hand tbh. The carts even have a label on them when they were done stamped on the front of the cartridge.

I guess just wondering whether or not it possible that certain games were done in their own countries - kinda like Korean MVS games.