Update with the full story from the seller:
He's travelling this week, and din't have recent photos of the bass. He sent me a photo of the bass as it was when he received it. The pickup had been replaced, and the preamp was of an unknown type.
The current owner has installed Lakland pickups and an LH3 preamp. He's sending updated pics of everything when he gets home, and I'm not making any decisions until then.
So that's the story so far. I'm still probably buying it, if everything looks good from the pictures. The seller has a lot of great feedback on the Norwegian used market, and is knowledgeable when I ask specific questions. As long as the Lakland electronics are installed properly, I don't foresee any issues.