[GreenKeys] What Is IT?

[WB6BLV (DM06)]

This thing followed me home from the swap meet this morning... kinda heavy sucker, too...

Various ID plates say:

KY-469UG
Keyer, Telegraph Transmitter
Manufactured For Department of The Navy
Great Northern Telegraph Works

and

G. N. T. Transmitter
Model 2042

and several other plates with Navy property number, etc...

There are 2 nice switches in brown plastic domes on the front and visible sets of contacts above them on the front of the unit... the motor in the rear drives a horizontal shart that goes through a "Speed Regulator" with adjustment range of 15 - 240 (yes) words per minute...  looks like it reads tape of some kind..

OK, what followed me home?  CW sender that reads prepared tape messages?

John