I gave the tins the shake rattle and roll test and they are pretty quiet. The Bohemian Scandal is actually bulging, so maybe I'm lucky!You can tell by shaking them next to your ear. You will hear the dry tobacco shaking around in the tin. I hope yours weren't like mine. I hate re-hydrating tobacco.
In any event, there's not much reason to wait much longer. It's not like it's going to develop that much more.
I just popped at tin of Haddo's from 2000, and the fragrance is absolutely fabulous! It went straight into a mason jar before the booze can evaporate.