Pre War Card Blank Back vs Non Blank Back NOVICE Question

[Shoeless Moe]

I know there any many factors at play here: year, set, player, rarity, etc., but in general if you have the exact same card front, in the exact same condition/grade, say a Shoeless Joe 1916 Sporting News Back and the exact same front but a blank back, how much less value is the blank back card. And actually could be any player just using the above as an example. I'm more memorabilia, and a card novice. Just a general idea of value Blank Back vs Card Issue Back.

[Leon]

There are many different sets that have different backs and the same fronts. Each has their own values and scarcity levels. In the T216 series there are 5 different backs. Each one has their own scarcity and value level. On M101-4/5 it is the same scenario. Blank backs of those are generally worth a bit less than most of the ad backs. Some ad backs carry a higher premium than others. It really depends on the specific set and ad on the back.

With your example of a Joe Jackson M101-4/5 having a blank back vs having a very rare back, you could be looking at multiples of value more for a really rare ad back...ie Holmes to Homes, Everybody's, Mall Theater etc....