| «Helen» | ||
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| Model LO303131A | Model LO303131G | Model LO303121A |
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| Model LO303121G | Model LO303221A | Model LO303221G |
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| Model LO303251A | Model LO303251G | Model LO303231A |
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| Model LO303231G | ||
| 1 Catalogue | 2 Partnership | 3 History | 4 Contacts |
 rus eng
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 Transmatic CollectionBig Date Power Reserve Regulator Louis William Gabus CollectionWilliam Maurice Le Locle Helen Worb |
Model description
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| produced by IGREL |