Unfortunately, watches with massive gold casings are often the victims of their owners, who melt the case and get paid for the gold price. Especially watches that use a mass produced movement, are increasingly rare. The watch, produced in January 1974 (A74), was dedicated by the RAG (Ruhrkohle AG) for a 25th anniversary.
In the catalog from 1971 to 1972, three watches with the caliber 620 in solid gold case are offered, a rectangular with Roman numerals (reference number 63/8651), a round with date at three (reference number 63/9554) and finally the watch shown with the Reference number 63/8553.
The case with the anniversary engraving "RAG 25 years" is closed with a golden snap on back, which also bears the stamp of the gold alloy: 14 c and 0.585 respectively.
The watch comes from the collection Markus Neumeier, with heartfelt thanks!!