1930s Rolex Oyster Bubble Back 1st Black Bar Index Design by Beyer
| Manufacturer | ROLEX OYSTER |
|---|---|
| Model | Bubble Back |
| Year of Manufacture | 1930's |
| Reference no. | --- |
| Product no. | B-7789 |
| Price |
1930's Rolex Oyster Bubble Back? This is a very rare 1st model black bar index design. It has a rare early water-resistant case with a big crown, a rare early movement with engraved handling instructions, and a black mirror dial with a simple yet somehow quaint bar index design. It is a precious W-name model of BEYER, the oldest watch store in Switzerland.
Item details
| Serial no. | *** |
|---|---|
| Caliber | 520 |
| Movement no. | --- |
| Movement type | Automatic |
| Material | Stainless steel |
| Case size | 30.5mm |
| Case type | Screw back Water-resistant |
| Dial | Original |
|---|---|
| Type of Indices | Luminous |
| Belt | Original (16.5mm, between lugs) |
| Evaluation case | 90％ |
| Evaluation dial | 92％ |
| Evaluation mov | 92％ |
| Condition | 4.5 |
| Rarity | 5 |
Other details
Case: minor scratches and aging, but retains its original shape and volume. Dial: Slightly aged, but retains its original texture. Movement: no problems with winding and screwing. Accuracy is around 50 seconds per day.