Interesting dilemma, cellar them and hope nothing happens to your particular tins or send them back for a refund and the good tins turn out in 10 years to be stellar or open them all to check and if good jar them but now you don't have the sealed tins to resell in 15 years for $10,000.00 each because they are now stellar.
Mr. Reeves, C&D and Laudisi have stepped up and will make things right and thanks for that.
Now since I have thrown thousands away in the stock market over the years and made some dumber and costly moves over the years, I will keep my tins for the future and it's only $50.00 for the 5 tins. I will open one tins every five years and await the surprise, good or bad.