Number | Name | Date | Kind |
---|---|---|---|
D236592 | Portmann | Sep 1975 | |
D238758 | Schulthess | Feb 1976 | |
D249024 | Ackerman | Aug 1978 |
Entry |
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Swiss Watch & Jewelry Journal-3/76-p. 331-Watch at center. |
Swiss Watch & Jewelry Journal-2/81-p. 196-Watch. |
European Jeweler-10/81-p. 121-Twin-Time Watch. |