Thanks Stewart
I'm thinking that E Grubelin would have taken a 40 Heuer chrono and perhaps created the 18ct gold case and decorated the movement?
Possibly on behalf of Heuer or a private commission

: I found the nelow history lifted from the web, it was with a
: listing for a very old Heuer Moonphase..
: It suggests that E. Gübelin was the mark of their jewelers arm of
: the business.

: "Gübelin, E of Lucerne. In the 1854 Jacques Edouard Gübelin
: married the daughter of the watchmaker Maurice Breitschmid. He
: joined Maurice in his business in Lucerne. 1905 saw them acquire
: a building called "Palais Anglais" at 1
: Schweizerhofquai. this was still the headquarters in 1989. The
: 1915 and 1920 listings show the company as Ed. Gübelin. By
: 1919, Edouard, son of Jacques Edouard was head of the firm and
: opened a New York outlet. This outlet was for watches but by
: 1921 also sold jewelry.

: The company used watches made by many prominent makers such as
: Audemars Piguet, Haas, Neveux, Niton, Patek Philippe and
: Vacheron Constantin. In 1925 and 1928 the company listed had
: changed to Ed Gübelin under watches and E. Gübelin under
: jewellers. In 1940 Gübelin exhibited at the 1940 New York
: World's Fair under the name E. Gübelin, located in Lucerne and
: Zurich. The goods were imported into the USA by E. Gübelin Inc.
: of New York.
: Around 1949 the name of the form changed to Gübelin Fils. and in
: 1957 was listed as Les Fils Gübelin.By 1966 this had changed to
: Gübelin AG and Gübelin Söhne. In 1973 at Basle they exhibited
: as Gübelin SA.

: The company has continued through 5 generations of the family and
: was still trading in 1990. From about 1982 to about 1985, the
: designer Richard Daners worked with Walter Gübelin and his son
: Thomas to produce some one off masterpiece watches."

: Link here:
: http://www.goodtech.biz/watch/images-heuer/heuer-03/ebay.htm

: Cheers
: Stewart