

Rare Rolex 1966 document paper warranty from "Bureaux Suisses de controle officiel de la marche des chronomètres" from Rolex Datejust #1603.
Extremly rare to find, collectible document !
Estimated period 50~60's.
Rolex, like other Swiss watchmakers, relied on "Bureaux Suisses - de Controle Officiel de la Marche des Chronometres (Swiss Institute for Official Chronometer Tests)" to certify that Rolex movements met or exceeded the standards required to be designated "official chronometers."
The institute is an independent testing organization that certifies watches to this day. Rolex watch movements were tested for accuracy in varying positions and temperatures. In the earlier years, their results were logged by hand or typewritten on the larger timing certificates.
Afterwards, the movements were sent back to Rolex with the certificates.
Swiss watchmakers used this independent testing organization to help them establish a strong reputation for manufacturing quality timing instruments.
Sales and marketing literature touted the watches with movements as "Officially Certified Chronometers."
These timing certificates guaranteed were included with chronometer rated watches indicating the watch case number and the movement number. They are printed on both sides with the front side having results of timing tests handwritten with fountain pen or typed. Some had stickers on the bottom specific to Rolex watches.
On the back there are instructions on how to interpret the test results.
The case numbers were punched on certificates starting circa 1.35M onward.
This one is mint condition, circa 1966, serial number on request (123xxxx) ready for Rolex vintages watches DateJust 1603 from 50's until 60's.
Sticked with Rolex official dealer sticker.
DESCRIPTION ROLEX GUARANTEE PAPER :
SIZE : 8.25" x 11 5/8"
(20,9 x 29,5 cm)
Chronometer rated watches :
5508, 5512, 6610, 6538, 6536, 6542, 1675, 6541, 1019 & 1675 PCG, Datejust all watches from 60's with registers on dial :
"OFFICIALLY SUPERLATIVE CHRONOMETER".
DISCONTINUED - HIGHLY COLLECTIBLE
Perfect for collect !
GUARANTEED TO BE 1OO% AUTHENTIC
Rare Rolex 1966 document paper warranty from "Bureaux Suisses de controle officiel de la marche des chronomètres" from Rolex Datejust #1603.
Extremly rare to find, collectible document !
Estimated period 50~60's.
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