Made in black, white and bronze finish
The numerals were changed from radial to upright in 1958.
The Big Ben style 7 was introduced in 1956. Ellworth Danz designed the case. No design patent was applied for because the patent attorney said it was “just another round clock”. This is the first Big Ben with concentric alarm indicator and a plastic lens.
The standard case colors are white with brass bezel and black with brass bezel (black Big Bens up through 1958 or 1959 have nickel bezels). Black cased clocks have either a non-luminous dial that is white with black numerals and a background pattern of small light blue dots, or a luminous dial which is black with luminous figures and a background pattern of blue dots. White cased clocks have either a non-luminous dial that is white with brown numerals and a background pattern of light blue dots, or a luminous dial that is brown with luminous numerals and a background pattern of dark brown dots.
The first style 7 clocks have radial numerals on the dial, and in 1958 they were changed to upright. The radial numeral dial U.S. Big Ben has “Big Ben” printed in script; the upright numeral dial U.S. Big Ben has “BIG BEN” printed in block letters. The bottom of the style 7 dials are simply marked “MADE IN U.S.A.” instead of the “MADE BY WESTCLOX, LA SALLE, ILL. U.S.A.” used on earlier style Bens.
A new movement was designed for the Big Ben style 7. It uses a single mainspring for both time and alarm. This movement has separate time and alarm set knobs.
A Big Ben style 7 in a bronze finish painted case and golden spun dial was made from 1960 - 1964.
The style 7 Big Ben Electric was from 1956 to 1964. These clocks use the Westclox M4, which was a more compact design than earlier motors.
Style 7 was discontinued in 1964.