Jackie postcard question

[Lucas00]

Originally Posted by Exhibitman

The thread in question is one collector's opinion, very forcefully stated multiple times as though it was fact, but with zero evidence. No one can know for sure w/o confirmation from JJK. Flatly declaring that the ones without the back printing are not JJK products is inductive reasoning at its worst. Just because we have JJK products stamped JJK on the back does not mean that all JJK products are stamped JJK. if the cards were offered on a wholesale basis, maybe the people ordering the cards had the option to skip the back printing for a cheaper price? If the cards were to be used as mail response cards for people requesting photos, for example. To my way of thinking, if the card front shows the same as the JJK card and the paper is the same, my suspicion is that the same printer made both cards but for different uses. That certainly is the case with the Felix Mendelsohn-produced set of 200 cards that was custom printed for 21 different businesses as well as released blank backed.

I agree, they definitely all could be printed by the same company possibly only for jjk. However jjk decided to brand their own and the others did not. Maybe even jjk stopped stamping their own, who knows. All you can really do with the historical information we have is make assumptions. If one has jjk on the back and one doesn’t I have to agree the one that doesn’t shouldn’t be considered jjk copyart. Imagine if somebody found a box of dads cookies exhibits but only half of them had the branding on the back, Would the other half be considered dads cookies? I personally don’t think so.

[Exhibitman]

The example is inaccurate because we don't know whether JJK made both forms of cards, but we do know that ESCO made the Dad's cards. Expressed as a syllogism, the actual Dad's situation flows from general to specific:

ESCO made all Exhibit cards
Some Exhibit cards are Dad's cards
Therefore, all Dad's cards are Exhibit cards

The logic moves from general to specific because we know the general proposition. Without the general proposition, the next steps fall apart. We don't know whether JJK also made the blank backs or whether someone made the imprinted cards for JJK and also used the art to make additional cards for another customer. I suspect the former because JJK Copyart Photographers were a NYC based photographer that made other cards too. Here is one the company made that is clearly a promo for a circus act:



It has the imprinted back, but odds are that any customer who wanted a blank back could have ordered it