[GreenKeys] Teletype Corp. machine with a tube (was acrylic case)

[Jim Haynes]

I wonder if a 25L6 would be a better tube for the purpose.

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 	"Ya can argue all ya wanna, but it's dif'rent than it was."
 	"No it aint! No it aint!  But ya gotta know the territory."
 		Meredith Willson, The Music Man