A number of years ago someone had a "NOS" Islander at Hershey. It did not have the decal on the inside of the door and all the drive screws on the tags had been replaced with machine screws. I'm not making any insinuations about this one. Just some things to be on the lookout for.
good points by Ron. someone just posted a supposed 'NOS' pump on facebook and when looking close at pictures, you could see wear around the hose guards, scratches in paint, and the veeder root was locked in reset. and the crate was obviously wood that wasnt 60+ years old.
not saying anything about the one posted here, but as Ron said, there are things to lookout for with the NOS items.