Cool Styling on a beige 1968 Nyematic Dictaphone.

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This is not really an intercom but a Nyematic dictaphone dating from 1968. It was manufactured by Nye Products Inc between 1958 and 1971 when the company was purchased by Lanier Systems. Nye Products was located in Seattle. It is obviously a small company factory production item with the circuit board appearing to be hand soldered. The circuit board is also hand signed by it's assembler and imprinted with company specific information along with imprinted logos from the electronic supplier. The handset is marked ITT. The face has a working analog flip card indicator that turns from red to white when the phone is off hook when it has signal. I have not been able to test the handset swtiches and am unsure of the orignal wiring schematic. However, the cord has six wires of which four appear to be used for basic signal function. Connecting the yellow and green wires to tip (green or L2) and brown to ring (red or L1) with the correct polarity in place will allow the device to work as an extension phone ---talk and listen without ringing.  The switch hook is a small microswitch on the circuit board with a broken mount which I repaired reversibly with hot glue to function. (It was held in place with electrical tape when I got it).  There is no switch pile.  I have cleaned the exterior but did not dissassemble for a deep cleaning due to soldered electrical connections in place, so yellowing remains.