Photos aren't great but the screwheads suggest that neck's been on and off the bass a few times, which could mean anything of course, but provides little reason for him to argue that removing the neck to prove the date stamp could damage the original screws/threads etc (the excuse I was given a few years back).
Anyway, it's all a shot in the dark on the evidence provided. He doesn't seem keen to give any more details than he has or book inspections (he added extra information to the thread that simply repeated the previous details). He might not really know himself if it's truly a '62, would be the first guy to won and play an instrument for years only to find they were sold a ringer in 1978. Either way, I get the sense he's trying to keep people interested - and potentially start an eBay bidding war - without any bidders actually knowing what they're bidding on? There's a bid of £2800 on it at present which is perhaps a nice final price if it's a real - albeit far from original - '62, but a hell of a lot of cash for fugazi. Interested to see how this one pans out 🤫