[GreenKeys] Model 28 signal lines

[Jim Haynes]

On Tue, 15 Oct 2019, w9ddd at tapr.org wrote:

> And to make it more interesting, is it possibly a Wester Union version?
>
Usually a Western Union version has "Western Union" on the front of the
machine, like on the copy holder.  And W.U. liked to use their own LESU
instead of the one by Teletype.  This is instantly recognizable because
it is painted green rather than the clear aluminum of the Teletype
version.