lucky strike light cigarettes (Luckies An American Original Ultra Lights) KS-20-H - Japan and USA Lucky Strike Cigarette Green Carton,

It's burley and spice and a bit of tang

Retrieved 15 February 2011

311 unique cigarette and kretek packs displaying mandated Indonesian health warning labels (HWLs) were systematically assessed for compliance with key requirements of Indonesian law: warning location, warning coverage, and warning label elements

The reason behind this is largely a matter of clever marketing, according to the authors of this editorial in the BMJ

The N means that it is N ot resistant to oil, and the P means that it is resistant to oil/oil P roof

Improper Bleaching: Cheap manufacturers might use old, chlorine-based bleaching methods, leaving residual chemicals in the paper