Those are definitely neat and I haven't seen them before. There were 2 other Detroit Free Press sets of players in bright colors and larger sizes, 2 shown at very bottom are from the series M120. They are 1934-35, I believe. The other is a premium from about the same time. They don't really have a lot of value....maybe a seventy five bucks for all 3? maybe a little less?
The other 1934 Detroit Tiger Team set I am familiar with was put out by Annis Furs. Here is the the Cochrane from that set, I used to own.
It is approximately 4 x 6 inches in size and that series has a little more value, but not a ton, except for I think Greenberg?...and the poster that told us where they came from next to it....
Value of your lot will be a bit hard to determine since they are so rare. Good luck!!