1978-79 Northern Telecom Alexander Graham Plane QSQM450A Later Production Version.

This later 1978-79 production model:

• Dual plunger with wider stop.
• Number card window
• Counterbalance weight in the tail is a triangle lead weight
• Date on lower body stamped 1979
• No date on upper body
• Matte paper dial card

All the parts are original and dated 1978-79:

• Dial: 1979
• Handset (upper & lower): 1978
• Coiled Handset cord: 1978
• Transmitter: December 01 1978
• Receiver: November 30 1978
• Ringer: 1979
• Network: 1978
• Modular Line cord: 1978

As Received July 2025

Dismantled

Dates

Finished