His connections to Gallet and Excelsior Park, whose owner Helmut Sinn knew from the airfield, were crucial for the acquisition of their watches and watch components. He assembled similar watches that were in no way inferior to those of Gallet and Excelsior Park.
He used parts with an already existing signature, and the dial received his then Sinn logo. Due to the limited availability of movements, according to Helmut Sinn, only 90 to 100 pieces of these models with Excelsior Park caliber were assembled for his company.
GUINAND AS A RELIABLE PARTNER
With Guinand, Helmut Sinn found a like-minded partner. Working with this reliable partner was very fruitful and appreciative for both sides. From the mid-1960s to the 90s, Guinand Watch Co. manufactured a not inconsiderable number of Sinn watches. He acquired the largest share of cases and parts from 1961 to 1994 from Guinand Watch Co. In 1995, Helmut Sinn took over the shares of Guinand S.A. by the Guinand family and produced in Switzerland for other brands. In 2000, production in Switzerland for other brands was discontinued and production for its own brands Guinand, Chronosport and Jubilar was relocated to Germany.
Gallet and Excelsior Park
SINN MultiChron 45M
Sinn MultiChron 45M
Case with screwed back and black dial and two sub-dials. 45-minute at 3 o’clock and the permanent seconds subdial at 9 o'clock.
The outer back cover is not signed, the inner back cover is signed with ACIER INOXIDABLE and serial number. The movement is a manual wind Excelsior Park EP 4 calibre.
Dial double branded with SINN and Excelsior Park.
Serial number 6 digits starting with 935 XXX.
SINN MultiChron 12H
Sinn MultiChron 12H
Case with screwed back and black dial and three sub-dials. 30-minute and 12-hour subdials at 3 and 6 o'clock, the permanent seconds subdial at 9 o'clock.
The outer back cover is not signed, the inner back cover is signed with ACIER INOXIDABLE and serial number. The movement is a manual wind Excelsior Park EP 40-68 calibre and signed.
Serial number 6 digits starting with 949 XXX.
SINN Decimal MultiChron 12H
Sinn MultiChron Decimal
The Sinn Decimal is a unique variant of the MultiChron series.
The timekeeping functions are designed for applications in medicine, industry, sports, and science, divided into minutes and tenths of minutes.
The decimal division can be used for statistical analysis or for calculating the cost of a work process. The decimal scale divides an hour into increments of 100 and 10 instead of the traditional 60 divisions.
For example, the chronograph is activated when a work process starts or ends. The time of the process can now be read directly on the dial, and the cost per minute can be calculated.
Due to its specialized use, relatively small quantities of this rare watch were produced.
SINN MultiChron 45M
Sinn MultiChron 45M
Case with screwed back and black dial and two sub-dials. 45-minute at 3 o’clock and the permanent seconds subdial at 9 o'clock.
The outer back cover is not signed, the inner back cover is signed with ACIER INOXIDABLE and serial number. The movement is an manual wind Excelsior Park EP 4-68 and signed.
Serial number 6 digits starting with 957 XXX.
SINN MultiChron 12H
Sinn MultiChron 12H
Case with screwed back and black dial and three sub-dials. 30-minute and 12-hour subdials at 3 and 6 o'clock, the permanent seconds subdial at 9 o'clock.
The outer back cover is not signed, the inner back cover is signed with ACIER INOXIDABLE and serial number. The movement is a manual wind Excelsior Park EP 40-68 calibre and signed.
Serial number 6 digits starting with 951 XXX.
SINN MultiChron 12H
Sinn MultiChron 12H
Case with screwed back and white dial and three sub-dials. 30-minute and 12-hour subdials at 3 and 6 o'clock, the permanent seconds subdial at 9 o'clock.
The outer back cover is not signed, the inner back cover is signed with ACIER INOXIDABLE and serial number. The movement is a manual wind Excelsior Park EP 40-68 calibre and signed.
Serial number 6 digits starting with 953 XXX.
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