Smiths Battery Clocks

I bought the following three Smiths battery clocks today:

• Sonomatic Alarm Repeater - 1971 to 1973
• Chalfont (rectangular wood case) - 1968 to 1974
• Autosonic (alarm clock) - 1974 to 1978
  

Model: Sonomatic Alarm Repeater - 1971 to 1973
"Smiths Battery, Repeater Alarm"

Model: Chalfont (1968 to 1974)
"Smiths Sectronic Battery
Made in Great Britain"

Back of the Chalfont clock - note the label indicating the model name

Sectronic Mk1 Later version

Model: Autosonic - 1974 to 1978
"Smiths Timecal
Transistor Battery
Made in Great Britain"

Transistor Battery Movement

Reference: Smiths Domestic Clocks By Barrie Smith

PS I also bought a Kienzle desk clock and a Westclox alarm clock.