>>6681372Maybe I'm confusing you with other maus build, but there was someone with a v1 maus and the turret version too.
Anyway here pic related, when people say factory markings in this case they refer to literal markings done at the factory during assembly. Made irl with white chalk it seems, you can do them with a sharp white pencil or good small brush control (or decals) and just put them near welds or areas where pieces are attached or holes made, anywhere you feel like and makes some sense really.