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Unclassified vintage Watches

Rolex 16528 Floating

of Jewellery Bonanno

Rolex 16528 Floating

As previously described in the inherent Rolex 16520 Floating, We're talking about 300 porcelain (another name often used) products.

We draw some news from the previous article, to remind you how much work has been used for this watch.
The house mother chose as a gauge (mechanism) to use the "Zenith 400 El Primero", with 36000 alternations and a frequency of 5 Hz, using a special-based disulphide dry lubricant Molybdenum applied by a vaporization process, which required specific equipment and a maintenance every two years. The basic caliber Zenith El Primero was then processed deeply, so much so that necessitarono 200 changes so that it could be compared to the quality standards of the brand.

The first, necessary, interventions were carried out to reduce the number of alternations (from 36000 to 28000) and decrease the frequency from 5 to 4 HZ. They mounted on the movement a larger rocker that oscillated at a lower frequency, common to all Rolex calibers of the moment, so as to simplify and improve the reliability of such movement.
The rocker Rolex has four races in glucydur with Breguet spiral and a Microstella regulation system. Lubricants used for 4030 were those traditional media, those changes allow Rolex to recommend a review every four years, once almost twice the original size.

The 4030 Daytona movements mounted on the first serial ref.16520 series R / 3/8 had an numbering between 10000 and 20000 (numbering random which also takes account of the next serial L). The first nuts (to perform speed measurements) were 200.
Uno dei progettisti di questo orologio, recandosi spesso a Parigi con un treno ad alta velocità, passava il tempo divertendosi a misurare la velocità con il suo Daytona 16520 (uno dei prototipi che, in quanto tale, non aveva il seriale e montava quadranti di prova). Il treno viaggiava a molto di più di 200km/h, quindi si rese conto che per il mondo moderno un misuratore con scala a 200 era insufficiente e propose di ridisegnare la scala con un limite più alto (400 uph. La prima venne realizzata con intermedio a 225).

& Nbsp;

Un’altra interessante caratteristica è il quadrante Floating, si pensa prodotto in cento esemplari per ogni versione (oro, acciaio e oro, e acciaio; questa ultima più rara rispetto alle tipologie oro e acciaio e oro uguali come quadranti). Questo procedimento di lavorazione era assai lungo e complesso, con esposizione a forni ad alte temperature e poi l’applicazione delle scritte. A seconda del livello di essiccazione del quadrante nel momento in cui sono state poste le scritte ha creato i vari livelli di floating (porcellanati 1/2/3 livello).

It's always too little one on which we can shed some light. What to add: Today this watch is called the Paul Newman of automatic, and you think of Paul Newman with screw keys and manually wound, they were produced around 300, with values ​​ranging from a low of about 300,000 Euros to a maximum approximately 500,000 euro for normal versions, while other extremely rare, for different characteristics, also values ​​above 1,000,000 Euros.
As already mentioned, automatic porcelain were produced approximately 100 stainless steel, 100 stainless steel and gold and gold-100. To date, the market valuations are extremely lower than those of manual winding ancestors, the rest is up to your feedback.

We attach photos and the clock, as is our usual, we illustrate with a graph the trend of the value in the various years, bringing the cost of the object had at the origin and the price corresponding to the present, also points must be noted in the years has appreciated.
The watch in question, for a standard model, had a cost of about 20 million lire in 1989, corresponding to today's purchasing power of € 20,643.82. So far it has reached a value of € 50,000, more than double the initial amount.

This shows the great appreciation and then the big investment that this watch made.

Fabio Michetti Article