I don't mean this as put down or anything, but this is the most precisely I've ever heard of anyone handling a lead acid battery, you're seriously worried about 10 millivolts?
Sounds full and balanced to me, I'd stick it in the genset, give it a test start, and park it on a good float charger. If you really want to see higher voltage, push higher voltage/current to it, though I'm wary of overcharging anything I can't easily pull the caps on.