The quality of the original print stock and the specific typographic conventions are period-authentic markers that experienced ephemera collectors recognize on sight
Sources: 1 Abernethy, Amy
Here is Delta's e-cigarette policy: "Battery-powered portable electronic smoking devices (e.g., e-cigarettes, e-cigs, e-cigars, e-pipes, e-hookahs, personal vaporizers, electronic nicotine delivery systems) when carried by passengers or crew members for personal use must be carried on one's person or in carry-on baggage only
Interesting news for those (in the UK) who recall with nostalgia the days when you could tell your Rothmans from your Benson & Hedges at a glance or (in France) never confuse Disque Bleu with Gitanes
In true contrarian fashion, the B-side here is what really grabs me