[GreenKeys] my tty, a model 15 RO, has a S/N or 209797 when was it made?

[COURYHOUSE at aol.com]

does not anyone  have a serial #  run chart on these?  that  is the second 
wise ass answer I got  today!
 
 
In a message dated 3/2/2012 3:05:21 P.M. Pacific Standard Time,  
Til128 at aol.com writes:

Any time between 1930 and 1954?  ;-))
 
Tom  T. 


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