No Adam, they didn't actually...
They are usually referred to as the Lasalle clock.
I will now, at the risk of copyright infringement, quote from John Price William's excellent book; "Maserati, the Road Cars 1981-1997"
The Maserati clocks were named after a master watchmaker, Jean Lasalle of Geneva, who, in 1976, created the thinnest movement ever made for a wristwatch. The early clocks were marked Lasalle and made in Switzerland, not by watchmaker Jean hunched over a bench but by the giant Japanese Seiko group, to whom he sold out in the 1980s. Early clocks were powered by a small 1.55-volt silver oxide battery and the clock had to be taken out of the facia to replace it, with the risk of damaging the veneer. Later versions were powered directly from the electrical system.
there you go!
JimP