Pennsylvania Keystones differences

This might been discussed, but I’ll ask.

I know that the Pennsylvania had one or two paint schemes for their freight cars. There’re numerous Keystones designs, what is the logo that was used in the late 1940s-1960s prior to Penn Central?

Is the different keystroke designs like the Amtrak paint schemes or totally different?

· Circle Keystone Lettering was applied starting in Jan 1930

· Shadow Keystone lettering was applied starting in June 1954

· Plain Keystone was applied starting in July 1956

· PRR Initials only started in early 1960’s

Hope this helps. [8D]

And here is a version different than the one quoted above:

http://pennsyrr.com/index.php/operations/92-freight/107-freight-car-paint-schemes-banners-slogans

Ed

Thanks for the information about the PRR logos that helps me a lot.