Real photo postcards
 

Don't know at what time these postcards were issued.

They look like 1970's collector issue postcards (Rowe).

Mostly George Burke images. Likely produced by either Jim Rowe or George Brace, both of whom used Burke's original negatives to produce them. Both men tended to use the same standard RPPC stock with pre-printed Kodak back. If they have the players' names written on the back, I could tell you who did which one, but whether Brace or Rowe doesn't really affect the value. I'm not sure when they started cranking these things out, but as Rhys said, they were heavily marketed in hobby publications throughout the 1970's.

4th one down on the right looks like it might be a Norman Paulson/Jim Elder production from the 1960's, but I'm not positive on that one (again, could tell you if I saw the back).

FWIW, I'd be interested to see any of the original advertisements for these that anyone may come across in old hobby publications, and to hear what the earliest such ad anyone has found is. I have scans of a number of Burke's ads that he ran in The Sporting News in the 1940's, but haven't pursued any of the later ads (yet). Might be more appropriate for me to start a separate thread for that though.

Nice grouping of RPPC's that usually provide quality (for the most part) images at an affordable price.

The Ralph Pinelli appears to be the same image as was used on his PC back exhibit card:

http://photos.imageevent.com/exhibit...ze/Pinelli.jpg

If you could post images of the PC backs that would really help to pin down age.

Here is one of the 1970s w/Kodak back:

http://photos.imageevent.com/exhibit...s_%20Robin.jpg