The Greenwich is an electric alarm clock. The Greenwich in wood case was introduced in 1936, and a plastic-cased Greenwich was introduced in 1950.
The Westclox Greenwich electric alarm clock was introduced in the April 1936 Tick Talk magazine, with a retail price of $6.95. It is the most expensive Westclox illustrated in the October 19, 1936 Saturday Evening Post ad. It was discontinued in July 1939.
This clock has the Sangamo self-starting synchronous motor and a spring driven bell alarm, wound automatically as the clock runs. Two types of this first model have been observed.
A later model of Greenwich electric alarm clock was introduced on July 17, 1950.