Who on earth would give this to a Charity Shop?
It's a small batch premium product; presumably the original buyer knows it's origin and value, that immediately means a fairly small group of niche collectors.
I can't fathom why they'd give it away for free rather than selling it for 20x the price the shop sold it for and then giving the shop the cash as a donation.
If they wanted the charity to have something of value to sell, they went about it all wrong.
I don't get it.