Written by GoldSmithWatchWorks Sunday, 19 June 2011 15:50

READY TO WEAR

VINTAGE
RESTORED
1940

EXCELLENT

ALL ORIGINAL CONDITION

WWII

HELOISA

BUMPER AUTOMATIC

MILITARY

WATCH

WITH

1940
AS 1171
Swiss Made
17 Jewels
Brevet+
Sub Second
Incabloc
Automatic
(bumper)
&
Manual Wind
MOVEMENT

AND

G-20 NATO STYLE
GREEN NYLON
MILITARY STRAP
WITH
BRUSHED KEEPERS

32 X 40 MM

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THIS OFFERING IS FOR A RARE WWII 1940 ORIGINAL MILITARY HELOISA BUMPER AUTOMATIC IN STAINLESS STEEL WITH ORIGINAL TWO-TONE DIAL, WITH ORIGINAL STILL GLOWING RAISED RADIUM  NUMBERS, INNER MARKED SECOND & HOUR CHAPTER RING, RELUMED BLACK ORIGINAL HOUR & MINUTE HAND WITH RED SUB-SECOND HAND AND WATERPROOF, ANTIMAGNETIC  AND SHOCK PROTECTED DESIGNATION.

SOURCED THROUGH WIKIPEDIA
CREDIT WIKIPEDIA

'Bumper' wristwatches: 1923

Self winding mechanisms were more successful in wristwatches because the rotor could operate every time the owner moved his or her arm. The first version did not appear until after World War I, when wristwatches became popular. It was invented by a watch repairer from the Isle of Man named John Harwood in 1923,[11] who took out a UK patent with his financial backer, Harry Cutts, on 7 July 1923, and a corresponding Swiss patent on 16 October 1923.[12] The Harwood system used a pivoting weight which swung as the wearer moved, and which in turn wound the mainspring. The ratchet mechanism only wound the mainspring when moving in one direction. The weight didn't rotate a full 360°; spring bumpers limited its swing to about 180°, to encourage a back and forth motion.[13] This early type of self-winding mechanism is now referred to as a 'hammer' or 'bumper'.

When fully wound, Harwood's watch would run for 12 hours autonomously. It did not have a conventional stem winder, so the hands were moved manually by rotating a bezel around the face of the watch. The watches were first produced with the help of Swiss watch manufacturer Fortis and went on sale in 1928. 30,000 were made before the Harwood Self-Winding Watch Company collapsed in 1931 as a result of the Great Depression. 'Bumper' watches were the first commercially successful automatic watches; they were made by several high grade watch manufacturers during the 1930s and 1940s.

MILITARY WATCH OR NOT
THERE WERE LITERALLY MILLIONS OF SOLDIERS DURING WWII. ONLY A FRACTION WERE PROVIDED WITH MILITARY ISSUE WATCHES. THE WATCH INDUSTRY TOOK NOTICE OF THIS FACT AND BEGAN PRODUCING AND MARKETING MILITARY DESIGNED WATCHES WHICH WERE DESIGNED AND SOLD TO SOLDIERS.

MILITARY DESIGN
THE TEN YEAR PERIOD BETWEEN 1938 AND 1948 SAW THE UNIQUE STYLE OF MILITARY WATCHES SWEEP THE GLOBE. THE DEIGNS INCLUDED 29 TO 34 MM CASES, SCREW ON BACKS THAT AFFORDED SOME WATER PROTECTION, SHOCK ABSORBERS IN 15 AND 17 JEWELED MOVEMENTS. THE DIALS WERE ALSO REVAMPED TO WHITE OR BLACK WITH, IN SOME CASES, TWO TONE COLORS. THEY HAD OUTLINED RAISED RADIUM NUMBERS AND MOST HAD SWEEP SECONDS WITH OUTER CHAPTER RINGS AND LUMED HANDS AND IN MANY MODELS A RED OR CONTRASTING COLOR SWEEP SECOND HAND.

AWESOME ORIGINAL RADIUM DIAL
NUMERALS STILL GLOW
I DID NOT RE-LUME THE NUMBERS
BECAUSE THE RAISED OUTLINED
NUMBERS STILL GLOW
THE HANDS HAVE BEEN RELUMED

SORRY ABOUT THE BLUR.
OUR CAMERA WILL NOT TAKE PICS OF LUME
BUT YOU CAN SEE THAT IT IS STILL NICE

THE DIAL IS SIGNED:

HELOISA
AUTOMATIC

ORIGINAL BLACK STEEL
MILITARY HANDS
RELUMED AND GLOWING
CROWN IS ORIGINAL
NOTICE THAT IT IS A
LARGE MILITARY TYPE

CASE IS SUBSTANTIAL
AND
ALL STAINLESS STEEL

AN EXPANDO BAND WAS NOT
UTILIZED ON THIS WONDERFUL TIME PIECE

LUGS & END ZONES ARE EXCELLENT

CASE IN EXCELLENT CONDITION

CASE IS
32MM DIAGONALLY W/O CROWN
40 MM LUG TO LUG

SCREW DOWN
CASE BACK IS SIGNED
INCABLOC
ANTIMAGNETIC
WATERPROOF
STAINLESS STEEL
AUTOMATIC

STRAP WILL FIT
6 - 9

AND IS NOT ONLY
COMFORTABLE

BUT REALLY ADDS
VALUE TO THIS WATCH

1935-1945

AS 1171
1940
Swiss Made
17 Jewels
Brevet+
AS
Sub Second
Incabloc
Automatic
(bumper)
&
Manual Wind

THE AS 1171 IS A REDESIGN OF
THE ORIGINAL AS
HARWOOD AUTOMATIC

MANUAL WINDING & SHOCK PROTECTION
WERE TWO OF THE 1171 UPGRADES

1171
DATA
= 11'''
Dm= 24.8mm
H= 5.2mm
15/17 jewels
f = 18000 A/h
power reserve 36h


1171 ALSO UTILIZED IN
Favre-Leuba 437 (AS 1171)   
Fortis 250 (AS 1171)

Harwood
(AS)
automatic
(bumper)
no manual wind

Data
11.5''', Dm= 24.7mm
(with bumper Do= 25.6mm)
H= 5.35mm
15 jewels
f = 18000 A/h

1925-1931
A. Schild
Fortis
1926-1931
A. Schild
Blancpain
ca. 14000

first serial-production automatic
bimetallic screw balance
set by revolving bezel
bumper bearings on dial and back
winding torque limited
by friction coupled bumper
Britsh Patent 1576120
selfwinding mechanism
deposited 1920
Swiss Patent 106583:
selfwinding mechanism
deposited 10-16-1923
by John Harwood,
Baldrine-Lonon
(Ile of Man, GB)
Harry Cutts
Brighton (GB)

Example, year: signature; shock device
1-3) ca. 1925: SF,
Harwood Selfwinding Watch Co Inc
Patent No. 1576120
2 Adjts, 15 Jewels - 697
4-5) 1926:
Harwood Selfwinding Watch Co Ltd
Swiss, Patent No. 106583
2 Adj., 15 Jewels

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CONDITION WATCH:
EXCELLENT  -  RUNS EXCELLENT

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