Was looking to buy a 5 string and I fancied this Music Man Stingray 5. Looked up the serial number and a completely different bass showed up. I thought it could be an 80's model since it was mentioned that those are too old to show up in the serial number database. Weird battery cover too. Seller did disclose that the electronics and pups have been switched, so I'm not too worried there. Still, I can't really tell. Any ideas about this?