1948 Cleveland Indians Picture Pack Post season

[d_double_u]

I want to say hi first of all, new to the site. I was directed to come here from a few members on a discord server I'm apart of. I'm sorry in advanced if this is the incorrect place to post this.

I was going through some of my older cards and found what seems to be, a set of the 4-in-1 1948 Cleveland Indians Picture Packs. I've been trying to do some research and know that the originals were 6.5 x 9. I currently have the 2 1/2" X 3 1/2" ( 5 x 7 - 4-in-1) issued set that identifies the team as World Champs. As I recall I received these over 25 years ago from a friend and they were his mom's (she has since passed away). I'm just seeing if anyone knows or has any information in regards to these? How do you tell if they are authentic?

I came across this blog ( http://boblemke.blogspot.com/2009/07...8-indians.html ) while trying to do some research.

1948 Cleveland Indians.jpg

1948 Cleveland Indians Back.jpg

1948 Cleveland Indians 1.jpg

1948 Cleveland Indians 2.jpg

1948 Cleveland Indians4.jpg