Vintage 1958 GEC / PMG Bakelite Rotary Telephone, Rare 400-Series Internals
A stunning piece of Australian telecommunications history.
This is a classic GEC (General Electric Co. Ltd. of England) rotary telephone, manufactured for the Australian Postmaster-General's Department (PMG).
This particular unit is a desirable "transition" model—it features the iconic 300-series "wedge" Bakelite case but is factory-fitted with the more advanced 400-series internal circuitry.
Key Identification & Markings:
- Manufacturer: GEC (England)
- Model Markings: C58 PMG S1/411 (Indicates 1958 production for the PMG)
- Internal Circuit: DRG. CE-11022 / KS.13102 (Anti-Sidetone Circuitry)
- Handset: Original heavy Bakelite Curved S.304/24
Condition Report:
- Exterior: The Black Bakelite is in solid condition with no cracks or chips. It currently has a natural clean patina, which can be displayed as is. This is also the perfect candidate for a deep polish (such as with Greygate No. 5) to bring back that famous mirror-black shine if desired.
- Interior: Museum quality. The original paper circuit diagram inside the base is pristine, white, and fully legible—a rare find as these are usually torn or oil-stained. The internal components are also very clean.
- Dial: The rotary dial turns smoothly and returns with the classic mechanical "click."
Can I use this on a modern phone line? (NBN / VoIP)
Yes! While this phone was built for the analog "Pulse" networks of the 1950s, it can absolutely be made functional today with a few simple steps:
- Incoming Calls: Most modern NBN/VoIP "Modem" phone ports will still ring the internal metal bells (gongs) of this phone without any modification. You can answer and talk immediately once a standard RJ11 plug is fitted.
- Outgoing Calls: To use the rotary dial to call out on modern digital lines, you will need a "Pulse-to-Tone" converter (such as a Dialgizmo or an internal Rotatone chip). These devices "translate" the mechanical pulses into the digital tones modern networks require.
- Audio Quality: Because this contains the 400-series "Anti-Sidetone" circuit, the voice quality is significantly better than earlier 1930s models, making it much more practical for actual daily use.
The Perfect Project:
This is an honest, un-messed with survivor. Whether you want a high-end display piece for a mid-century modern home or a fun weekend project to convert a piece of history for your home office, this GEC/PMG unit is the perfect starting point.
Please see photos for full details on markings and internal condition. This telephone was put away working in the mid 90s. Now sold as-is/untested for restoration.