Though not exclusively, many dry-cured cigars (in tins or otherwise) are of European manufacture. Small tinned cigars from Caribbean or Central American sources are not.
This is at least my understanding. I keep short smokes almost constantly, and always in my humidors. At one point I also kept some dry-cured ones around, e.g. Villigers, as I thought they would be more "forgiving" as I toted them with me for emergency quickies. These I stored in a coolerdor, but felt no qualms about sticking one or two in my shirt pocket for hours.
In short, to answer your question . . .

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