About the style 9 Big Ben
The style 9 Big Ben and Baby Ben case was
designed by Ellworth Danz and is covered by design patent
Des. 257,129 issued September 30, 1980. The style 9 was in
preliminary production in LaSalle in the last month or two
in 1979, and
in full production in Athens, Georgia in 1980.
The quartzmatic (battery) models began
production in 1982.
Style 9 Big Ben Quartzmatic