1946 Tissot Automatic Bumper 31-21
Brand
Tissot
Series
Antimagnetic
Catalogue Reference
6541-1 (Bumper)
Production Year
1946
Movement Type
Automatic (Self-Winding)
Style
Dress Watch
Automatic
A watch powered by automatic (self-winding) movement that doesn't require a battery. It winds itself using the daily usage motion of the wearer's wrist.
Movement with production number 1733194, dating the watch back to 1946
Case
Diameter
35 mm
Thickness
12 mm
Material
Stainless Steel
Water Resistance
Water Resistant
Finishing Details
Polished
Bezel
Without Bezel
Crown Type
Push/Pull
Crystal
Acrylic
Caseback
Details Engraved
Dial
Color
White
Dial Markers
Arabic Numerals
Finishing Details
Applied Indeces
Luminiscent Indexes
None
Calendar
Without Calendar
Bracelet
Material
Lizard Skin Leather
Buckle Type
Standard Buckle
Width
18 mm
Color
Brown
Tissot 31-21
In-house Tissot movement produced around 1944 until 1956.
Detailed references diferences:
- 28-1 : sub second, base plate without mounting flange
- 28-21: sweep second, base plate without mounting flange
- 28.5-1 : sub second, base plate with mounting flange
- 28,5-21: sweep second, base plate with mounting flange
- 31-1 : sub second, bigger base plate
- 31-21: sweep second, bigger base plate
Manufacturer
Tissot
Model
31-21
Type
Mechanical Winding
Frequency
19800 A/h
Jewels
17 (Seventeen) Jewels
Reserve
40 Hours
Functions
Hours, Minutes, Sweep Seconds