as fingers were engaged LONGGGGGG before cranial participation
1) It is most likely NOT to be what we classify as a trade card as the size and format suggest otherwise and IS suggestive of an "insert" card - although if it was the "first" it wouldn't have a model to follow.
2) No package is known. There was a registered brand of Marquis of Lorne cigarettes as listed on the back of a known trade card. Cigarettes at the time were packed in different kinds of containers and still being rolled by hand as the Bosack machine wasn't patented until 1880, and it was a few years before it went into use. I have always heard a distribution date around 1880 for the card but unsure. I have a couple cigar boxes that held 100 hand rolled cigarettes. If it was such a box then we would have likely seen one already - which suggests some sort of paper box or sack. * I think the Yara card referred to came in such a box. If so - it could be seen as an insert - but I think it isn't for a couple other reasons which require more research.
3) Not sure when the Marquis held office - would help a bit as one would think the tobacco was being sold during his tenure - much like the Prince Albert and Now King on the tins and others. Knowing the production dates as well as the package dimensions would also help.
4) It is reasonable that the back would be blank as printing something there would add expense.
5) I doubt it was any kind of ticket or "give-away" in part because of it's size.
6) I think I've come full circle for now. It's a mystery - but I am now leaning to insert card. As to whether it's the "first" or even qualifies within MY parameters for a tobacco card - I would really like to know more.....