[timedetective]

As far as the Pinkerton Postcards go I found a thread here last night from a year ago saying that if the backs are gray or white then they are copies but if they are creamy white then they are originals. Also there is some distinction between made in the us and printed in the us?

I think that the backs on my look more creamy than white is because they had been in a photo album or on somebodies wall for decades. So not 1913 but possibly post WW2 copies?

And is there any insight to these other cards that anyone can give me?

I am looking on sending them all off to a private auction house.

Thanks in advance