AL and NL balls

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I recently obtained these two balls and I'd like to get some more info on them. All I know is that one is an AL Reach ball and the other is an NL Spalding ball. Both were described as 1929 balls, but I think they are from the 1930s.

They seem to be in very nice condition, but I am not a ball guy so I don't know the grading standards. The individual ball pics appear a little yellowed because they were taken in low light. The picture of both balls in their cases on the base was taken with a camera flash and shows their truer, whiter color.

Can anyone here give me specifics about the period these are from and maybe their value?

Thanks