Need help with the age of these Baseballs
 

Can you guys help me to Identify the approximate age of these vintage Baseballs?

Thanks for your time and Expertise

Paul

http://i770.photobucket.com/albums/x...aul/Net545.jpg

http://i770.photobucket.com/albums/x...aul/Net544.jpg

http://i770.photobucket.com/albums/x...aul/Net543.jpg

http://i770.photobucket.com/albums/x...aul/Net542.jpg

http://i770.photobucket.com/albums/x...aul/net541.jpg

Mountain States League ball is 1948-54
J DeBeer Official League Ball = 1940s
Not sure on the Spalding
The Champion ball looks to be 1910-20s

The Spalding ball is not genuine.