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Elena Napoleone

[Overview]
This item is a vintage SONY Program Timer PT-24, a combined clock and programmable timer device produced in Japan in the mid-1970s. Devices of this type were designed to automatically control the power supply of connected appliances according to a preset schedule. During the 1970s, programmable timers became popular in homes, offices, and studios as convenient tools for automating electrical equipment such as radios, lighting systems, heaters, and audio equipment. They represent an important stage in the development of consumer electronics, when mechanical timing systems were integrated with electrical control mechanisms.

The PT-24 features a distinctive dual-dial design. On the left side is an analog clock displaying the current time, while the right dial functions as a programmable timer that allows the user to set activation periods for connected devices. Above the timer dial are selector switches for outlet power modes, enabling manual operation or timed control. This practical configuration reflects the industrial design philosophy of Japanese electronics manufacturers during the 1970s—devices were built not only to perform a specific function but also to provide reliable daily convenience.

Sony was already a globally recognized leader in electronics during this period. The company’s products were known for combining technical reliability with clean, functional design. The brushed silver-tone front panel of this timer, along with its compact rectangular housing and analog control dials, reflects the modern aesthetic of the late Shōwa era. Objects like this were often placed on desks, shelves, or workbenches, serving both as functional equipment and as part of the technological environment of the time.

Today, vintage program timers are appreciated by collectors of retro electronics and industrial design. They illustrate the transitional period before fully digital automation became widespread. The mechanical timer dial and analog interface provide a tactile user experience that differs significantly from modern electronic timers. Well-preserved examples are increasingly sought after by enthusiasts of vintage Japanese electronics, particularly when they remain in working condition.

[Key Features]
• Manufacturer: SONY
• Model: PT-24
• Type: Program timer with clock
• Year: mid-1970s (code indicates 1975)
• Dual dial system: analog clock + programmable timer
• Power control switches for outlet operation
• Material: metal front panel and plastic housing
• Color: silver

[Estimated Period / Background]
Based on the product code and design characteristics, this item was manufactured in 1975 during the late Shōwa period in Japan. During this time Sony produced a wide range of innovative electronic control devices for both home and professional environments.

[Condition]
The clock mechanism has been tested and confirmed to operate properly.
The program timer was also tested by inserting the timer pins at the specified time, confirming that the power stops as scheduled.
The unit shows light signs of age but remains in good overall condition.
This example appears to have been stored carefully and retains a very clean appearance.

Note: This unit is designed for the Japanese domestic voltage (100V). A step-down transformer may be required when used in countries with different voltage standards.

[Dimensions / Weight]
Width: approx. 18 cm
Height: approx. 14 cm
Depth: approx. 7.5 cm
Weight: approx. 915 g

[Provenance / Notes]
Acquired from a Japanese domestic auction.
This unit was tested using AC100V 50Hz power. Operation in a 60Hz environment has not been tested.

[Shipping]
The item will be shipped from Japan using tracked international shipping via Japan Post.
Careful protective packaging will be used to ensure safe transport.

PT-24 - Elettrico 110 volt - Movimento infinito - Senza rintocco

Orologio a palette - SONY Design industriale Alluminio - 1970-1980 - Timer programmabile

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Orologio a palette - SONY Design industriale Alluminio - 1970-1980 - Timer programmabile

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