Thank You Dean
Appreciate your kind words
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Zenith Caliber 707 No. 601
Neuchatel Observatory The Zenith 707 caliber nicknamed internally as the Kartoffel or potato because of its unique shape was designed in late 1961 early 1962 and built in 1963 exclusively for Observatory Competitions to replace the venerable Calibre 135...
Congratulations on finding one of these rare movements. A collectors item for sure despite its odd shape. Built purely for accuracy. Fascinating stuff. Dean
The response of Zenith to the cal. 360. A splendid pedigree, a significant piece of horological history. What the movement lacks in aesthetics it more than compensate on the technical side. Do you happen to know how many were produced?
There is conflicting information on how many of these movements were made, some sources quote 250 and others 200. Regardless only 127 were entered into the Neuchatel Observatory competitions for wrist watches. How many have survived? not many, many were d...
I wrote in my post " At the 1965 Neuchatel Observatory competitions movement No. 601 of the Zenith Caliber 707 adjusted by Rene Gygax would come in first and also again in 1966. " the above statement is wrong and I wish to correct it, the movement Z-601 w...