The 75 through 78 standard clock was virtually the same construction
with the same mechanical mechanism. The real difference was the clock
numbers changed in 77 to the more rounded configuration.
In 77 the quartz clock option was offered. The mechanism changed
to an electronic movement and was very reliable.This clock is recognized
by the "Quartz" on the clock face.
280ZX '79-'83
The 280zx analog quartz has basically the same quartz mechanism as
used in the 77-78 280Z quartz. This clock is very accurate/ reliable
and more so than the digital quartz offered for 79-83.
ron@zclocks.com
