There is no doubt as to its authenticity, so no matter.
But, FWIW, as someone rather well experienced in
analyzing photos and images, the second [closer] pic
definitely shows a "6" not a "5". Databases are only
as good as the data input into them. Omissions are
not unusual. It's a bass, not a firearm. Just don't club
anyone to death with it and no matter about the s/n.