There are a few versions of the big bubblback using the full bubble movements. I have always love the bubble back for it's fat round back. Here is a very rare watch. This is a 1950s Rolex datejust know as the "Ovettone" Model number 6031. It is crafted entirely out of 18K pink gold. Diameter is 36mm and 44mm long with 20mm between lugs.
there is another model 4467 - Posted using BlogPress from my iPad