Hi Tab,
I'm concerned that the tobacco was open and still moist unless unless, and I think that this is a strong possibility, it was opened and sampled and deemed ready to donate

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I'd be surprised if it's actually less than 15 years old. It is possible that it's based on or a Dunhill blend but making one, as per my own example in their store, is as easy as making it. Does it have Perique?
Pete