Hirsute
Used to have fun with Commander Yellow Pantyhose
Once you open it, it will be open forever. You will lose your 14 months of aging if you pop it open. Believe me, a decade of aging makes for some wonderful tobacco.
I'm going to disagree a bit. My understanding is Owens baccy is already jarred up, so no factory seal here. And sure, opening and resealing doesn't do the same thing as aging uninterrupted, but once it's resealed it will continue to age (or perhaps start again again).