I think if I bought something like this, I would be way too tempted to open it and take a pinch…
I’m sure that you would be disappointed if you did so. I have been a couple of times, but hey, you don’t know until you try it. I DID get introduced to Wilson’s Prime Minister ( 12 unopened large tins - just over half a quart mason jar after decanting) a couple of days ago from Ebay. I like it.