These were obtained by my wife a few years ago on eBay at some expense and gifted to me for my birthday. I never checked their authenticity but was always a bit sceptical. Neither of us are experts, and frankly it was a bit of a punt even though the seller checked out ok, had impeccable feedback, provided full details, etc.
They came with some of kind of letter detailing how they were obtained.
Any opinion is much appreciated. Thank you very much.