Girard Perregaux

blomman Mr Blue
38586

• Show profile
• Show other posts

GP 6557 Chronograph - a closer look

Friends,

Sorry for my radio silence the last few days, I had a very stressful week with Family emergency. It is not really over yet, but at least stable enough to give me a couple of minutes to put a post I had prepared for you online.

I like to give you a closer look on another vintage chronograph: GP 6557.

It is a quite interesting watch which was before the more famous Olimpico chronograph.

The reference 6557 was produced between 1955 and 1957. The production was only during three years and the number of watches also not very big. Only 570 pieces in total. 120 watches with gold plated cases and 450 with “chromac“ cases.

What is Chromac? It is Chrome plated steel. I have been told the reason for this was to give the watch a more shiny look. To me this sounds very strange, I would have preferred polished or brushed stainless steel. But back then? It was probably the “hottest” you could have!

Strange… But trying to explain thigh, shiny white polyester suits for your kids…

The downside of chromac is that once you scratch the surface it looks worse that if you scratch your stainless steel watch.

The case is big. 38 mm in diameter, 46 mm lug to lug and 20 mm between the lugs. Flat pushers and big easy operated crown.

The 6557 is not waterproof and have a snap on case back.

Here is a scan of the waterproof sister reference 6558 with round pushers and screw down case back.

Inside is the calibre 04 is an Excelsior Park P4 base, made by Jeanneret in St-Imier.

The calibre 04 is a 45 minute chronograph. The right hand sub dial holds the minute counter and the central second shows the chronograph seconds.

The sub dial to the left shows the running, time seconds.

The sunburst silver dial and the blue Tachymetre scale reminds a lot of the Olimpico, but the red part of the scale between twelve and three is a Telemetre scale instead of Pulsations like on the Olimpico.

No luminous hands or indexes on the 6557. The hands are Pink Gold and so are the applied indexes.

Compared to the Olimpico 8846 the reference 6557 looks bigger and more elegant to me. In fact, only 0.5 mm differs, but I guess the clean bezel helps the 6557 to look bigger. Also the cleaner dial with only two registers helps.

As you may see in the comparison shot, the Olimpico is a bit thicker due to the water resistant case.

The two watches gives a similar visual impression, but very different in details.

Back in the days, retail price was CHF 330 in gold plated and CHF 270 in chromac.

I hope you enjoy this closer look.

Best of health to all of you!

Blomman

Site Info.