ROLEX SERIAL NUMBER TIMELINE

Before 1987 -  Serial number consisted of between 5 to 7 digits.

1987 - Rolex added a letter at the beginning of a serial number that consisted in 6 digits.

2005- Rolex started engraving the cases serial number on the inside edge of the case at the 6 o'clock position.

2010-  Rolex began engraving its watches by using randomized identifying numbers rather than using a sequence numbering system.

At the present time, Rolex features 8 digits instead of 7 digits.

The Spirit Of The Rolex Sky-Dweller

The Rolex Sky-Dweller was inspired by an astronomical phenomenon called "Saros", which consists of a planetary mechanism of the cyclical alignment of the Sun, Earth and Moon. In addition, this timepiece has 14 ingenious Rolex patents. One of those patents is the second time zone together with an annual calendar 30-31 day months.
Such is the spirit of a Rolex Sky-Dweller watch. In the picture below you can see the various versions of this fantastic and elegant Rolex wristwatch.

BEZEL COMPARISON BETWEEN ROLEX GMT II CERAMIC VS GMT II NON-CERAMIC

One of the most distinguish features of the Rolex GMT is the 24 hour bezel, which is used to measure different time zones. The bezel of the GMT II non-ceramic uses a Click-Spring to hold the bezel in its place. On the other hand, the bezel on the GMT II ceramic rotates on three ball bearings. The GMT II ceramic bezel clicks in one-hour jumps, rather than in minutes as the GMT II non-ceramic.

Rolex GMT II Ceramic Bezel

Rolex GMT II Non-Ceramic in a Rubber B Watch Band

THE CASE: ROLEX GMT II NON-CERAMIC VS ROLEX GMT II CERAMIC

Referring to the Rolex GMT II  case of these two models; The Rolex GMT II Ceramic (116710) is thicker, larger and 1.5mm longer than the Rolex GMT II Non-Ceramic (16710) case. Even though the 116710 is thicker, the watch fits perfectly to the wrist because the caseback is flat; as opposed to the 16710, that is more curved.


CASE MEASUREMENTS:

116710: 44MM      LENGHT LUG: 47.8MM
16710: 42.45MM   LENGHT LUG: 47.5MM

Rolex GMT II Ref. 16710

Rolex GMT II Ref. 116710

Office Panerai Insider

Panerai watches were considered by the aficionados as an "art in motion". Panerai offers a full line of watches based on its historic models. Office Panerai has four major lines of watches: Historic, Contemporary, Manifattura and Special Editions. In the picture below, we see two of the original Panerai models. However, these watch

models never were sold to the public,  as they were only for the Italian Navy.

THE ROLEX SUBMARINER 114060

Rolex Submariner- 114060

The Rolex Submariner 114060, was introduced in 2012 at Basel World. The Rolex Submariner 14060M. However these two model watches have some slight differences in the bezel, case, and bracelet.


THE CASE: is a Ceramic bezel. The middle case is made from a solid block of corrosive resistant 904L steel and fitted with the patented Rolex trip lock system, protected by a crown guard.


THE BEZEL: is made of Cerachom, which is scratch-proof. The graduations in the bezel are PVD coated with platinum, and the dial hands have chroma light technology for a long lasting glow when dark.


THE BRACELET: features a new Oyster lock safety clasp and gridlock extension system.

THE GLIDELOCK CLASP:  a magnificent feat of design, allowing for multiple levels of micro adjustment to achieve the perfect fit.