Yes, the snuff that I was talking about above is WoS stored in the original unopened tins. They are pretty much airtight from what I can tell, and they have green tape around the join. You’ve reminded me to buy some wide mouthed mason jars. The tins fit in these jars nicely, and that would add an extra layer of protection to the snuff. I’m going to stack several tins in each jar for a really good airtight seal.