3 Answers
http://download.cnet.com/Electronic-Piano/3000-2133_4-10837663.html
| 9 years ago. Rating: 3 | |
Bubbleback refers to the round domed caseback of these early automatic Rolex watches. Rolex introduced its first automatic "perpetual" movement in 1931. The first Bubbleback came in 1933 with a bulging caseback to make space for those link new 360-degree winding rotors. I won't explore the entire history of the automatic wristwatch but the legendary David link Boettcher has written about the Harwood self-winding watch and link precursors to the Rolex Perpetual.
| 7 months ago. Rating: 0 | |
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