|Date/Report Number ..101211.LC-U4GHER2 Item: 1965 STAINLESS STEEL FRENCH BERCO BELAIR TRUE 24 HOUR WRIST WATCH|
|Description of item: VINTAGE
1965-1970 BERCO FRENCH BELAIR IN STAINLESS STEEL WITH 17 JEWEL TRUE 24 HOUR MOVEMENT. D=
34mm, WITH NATO STYLE G-18 DESERT TAN NYLON STRAP WITH KEEPERS. 24 HOUR DIAL HAS A
RELUMED ORIGINAL CREME WHITE DIAL WITH OUTER BLACK NUMERALS 1 - 24 AND INNER SECONDS
CHAPTER 5 - 60 THE ONLY BLEMISH IS A SMALL SCRATCH RIGHT OF 18/45 MARKER THIS BELAIR
DIAL IS SIGNED BELAIR 17 JEWELS SHOCKRESISTANT ANTIMAGNETIC T [T = TRITIUM]. THIS BELAIR
HAN AN ALL STAINLESS STEEL CASE AND ORIGINAL STAINLESS CROWN THE STEEL SCREW DOWN CASE
BACK SIGNED WATERPROOF ALL TAINLESS STEEL ANTIMAGNETIC SHOCKPROOF. THE INTERIOR OF CASE
BACK IS SIGNED BERCO INC MADE IN FRANCE. Features Manual Wind Sweep Second Data 11.5''',
Dm= 25.6mm H= 4.55mm 17 jewels f = 18000 A/h power reserve 48h Remarks family: 23D:
10.5''' 23DC: 10.5''', date 26D: 11.5''' 26DC: 11.5''', date Example, year: signature;
shock device ca. 1965: Gruen Watch Co, 515SS, France, 17 Jewels; Antichoc-102.
Estimated Retail Replacement Value $ 809.00
|Reports are supplied at the request of the customer and it is for the customer's exclusive use. Reports express an opinion of the time of the examination of the jewelry. This report is for customers use only for the following two purposes, indicating estimated retail replacement value to obtain insurance coverage, or for the purpose of providing geological information. goldsmith Works does not guarantee that the appraisal valuation will result in a sale at the price. Estimated retail replacement value is arrived after analyses of what the approximate high retail cash asking price is for labor, materials, and design. These prices may be substantially higher than actual transaction or warranty with regards to any item described in the report, since jewelry grading is not an exact science, this report represent the best opinion of the company. GoldSmith Works is in no case responsible for differences that occur by repeated grading by other experts in the field and/or use of other standards, norms, methods or criteria other than those used by GoldSmith Works. GoldSmith Works is expressly held harmless by customers including, but with out limitation for any claims or actions that may arise out of negligence in connection with the preparation of this laboratory report, or actions based upon the customer's use of the report. The information on the carat weight, clarity grade, color grade on the report is approximate due to the limitations in jewelry grading. The item was tested, graded, and examined under 10x magnification using the techniques and equipment available to GoldSmith Works, including fully corrected triplet loupe, binocular microscope, master color comparison guides, diamond color comparison tools, electronic carat balance, non-contact optical measuring device, and ancillary instruments necessary at the time of Exam|
Tritium is a radioactive isotope of hydrogen. The nucleus of tritium (sometimes called a triton) contains one proton and two neutrons.
The emitted electrons from the radioactive decay of small amounts of tritium cause phosphors to glow so as to make self-powered lighting devices called betalights, which are now used in firearms night sights, watches (see Luminox for example), exit signs, map lights, and a variety of other devices. This takes the place of radium, which can cause bone cancer and has been banned in most countries for decades. Commercial demand for tritium is 400 grams per year and the cost is approximately $US30,000 per gram. TRITIUM HALF LIFE IS APP 12.32 YEARS.
1- BERCO IS LISTED AS A WATCH AND JEWELRY COMPANY IN CHICAGO, USA. YET THE WATCH WAS MADE IN FRANCE.
2- THE 17 JEWELS MOVEMENT IS SIMILAR TO THE FRENCH Jeambrun 26D, BUT IS NOT A Jeambrun 26D:
11.5''', Dm= 25.6mm
f = 18000 A/h
power reserve 48h
23DC: 10.5''', date
26DC: 11.5''', date
Example, year: signature; shock device
ca. 1965: Gruen Watch Co, 515SS, France, 17 Jewels; Antichoc-102
2- THE 17 JEWELED 24 HOUR TRAIN [WHEELS/GEARS FOR THE WATCH DRIVE HAVE MORE TINES TO ENABLE 24 HOURS VS 12 HOURS] MOVEMENT IS SIGNED WITH A CIRCLED "B". THAT 'B' WITHIN A CIRCLE MAKERS MARK WAS UTILIZED BY THE FAMOUS CARRIAGE CLOCK MAKER "Brunelot" AS STATED IN Charles Allix's 'Carriage Clocks'.
Brunelot designed many top quality French clock movements including 8 day Carriage Clock movements.
[actual end date may be further into 1900 but exactley when Brunlot ended clock making is unkown by GSW]