About 30 years ago I found an unopened bottle of Dom Perignon champagne, dated 1929, in a huge pile of trash removed from a house that was being vacated. I kept that thing like it was some kind of treasure until, a couple years later, my family was moving, so we opened it. No surprise, it had gone bad; in fact it tasted a lot like sherry, but not very good sherry. We poured it out. I would have been better off to leave the bottle unopened.

So my advice is, don't open your NOS, unopened, super rare, dream bike; you'll only ruin it.

Speaking of which, by the way, what IS your dream bike? I'm pretty sure I have one of those in my attic, in just the size you want, which I will be happy to sell you. 100% guaranteed to be just what you want! (sorry, no returns if the box is opened for any reason).