Wow, Doc, just...wow.
I was lucky enough to stumble into a couple of tins of Mclelland's Ringlow Syrian Reserve from 1995. Cracked one a few months ago and have been really enjoying it--can't say it's too mild at all, just right, in fact. Now, I haven't actually smoked a fresh tin of it, so I can't compare it to what a fresh batch tastes like--checked my B&M last time I was down, and the Ringlow Syrian tins they had were all at least a few years old, so couldn't pick one up to compare (I know, everyone should have this problem with their local tobacconist!).
Other than the Ringlow Syrian, I've been working my way through a tin of Douwe Egbert's Aromatic from the late 70s/early 80s...not much of an aro person at all, and after 30+ years in a tin the topping is still a bit much for me!