
Finding alternatives to
Sinn 103 St
Ref. 103 St
102 watches that match on case size, movement family, and price band. Sorted by how close the match is.
Case
41mm
Movement
Automatic
MSRP
$2,538
ComplicationsDateDay-DateChronographPilot's Bezel
Microbrand picks· 32
Independent makers covering the same brief — usually with something the mainstream brands don't.

Traska
Freediver Arctic
40mm · Automatic$735
Shared: Date, Chronograph · Automatic

Traska
Commuter Carbon Black
40mm · Automatic$700
Shared: Date, Chronograph · Automatic

Oak & Oscar
The Humboldt Seven Year
39.5mm · Automatic$2,400
Shared: Date, Chronograph · Automatic

Oak & Oscar
Team Shuster Humboldt
39.5mm · Automatic$2,022
Shared: Date, Chronograph · Automatic

Oak & Oscar
The Ashland
39.5mm · Automatic$1,850
Shared: Date, Chronograph · Automatic

Oak & Oscar
The Humboldt 12-hr
39.5mm · Automatic$1,750
Shared: Date, Chronograph · Automatic

Gruppo Gamma
Field III GMT Date
40mm · Automatic$459
Shared: Date · Automatic

Traska
Venturer GMT
40mm · Automatic$785
Shared: Chronograph · Automatic

Echo/Neutra
1956 3H
40mm · Automatic$1,025
Shared: Date · Automatic

Echo/Neutra
Cristallo Professional Diver 500m
42mm · Automatic$1,450
Shared: Date · Automatic

Traska
Seafarer Charcoal
40mm · Automatic$665
Shared: Chronograph · Automatic

Christopher Ward
C60 Trident Pro 300
40mm · Automatic$1,095
Shared: Date · Automatic

Gruppo Gamma
Vanguard Steel Date
42mm · Automatic$790
Shared: Date · Automatic

Gruppo Gamma
Vanguard Weathered Date
42mm · Automatic$790
Shared: Date · Automatic

Christopher Ward
C60 Atoll 300
40mm · Automatic$1,320
Shared: Date · Automatic

Christopher Ward
C60 Sapphire Edge
40mm · Automatic$1,495
Shared: Date · Automatic

Echo/Neutra
1956 Chrono
40mm · Manual winding chronograph$2,060
Shared: Date, Chronograph · Same size

Boldr
Expedition Enigmath
41mm · Automatic$599
Automatic · Same size

Christopher Ward
C60 Pro 300
42mm · Automatic$1,550
Shared: Date · Automatic

Gruppo Gamma
Field III GMT
40mm · Automatic$459
Automatic · Same size

Boldr
Blastoise
40mm · Automatic$449
Automatic · Same size

Boldr
Charizard
40mm · Automatic$449
Automatic · Same size

Boldr
Expedition II
41mm · Automatic$699
Automatic · Same size

Echo/Neutra
Averau 39 3H
39mm · Automatic$840
Shared: Date · Automatic

Lorca
MODEL No.2 CHRONOGRAPH
37mm · Automatic$2,750
Shared: Chronograph · Automatic

Brew
8-Bit V2
40mm · Automatic$395
Shared: Chronograph · Automatic

Brew
Metric - Digital Blend
40mm · Automatic$425
Automatic · Same size

RZE
Endeavour
41mm · Automatic$599
Automatic · Same size

anOrdain
Model 1
41mm · Automatic$3,804
Automatic · Same size

anOrdain
Model 2
41mm · Automatic$2,673
Automatic · Same size

RZE
Resolute
40mm · Automatic$759
Automatic · Same size

RZE
Resolute Type A
39mm · Automatic$499
Automatic · Similar size
Steps up from here· 22
Where the same idea goes when budget isn't the constraint.

Sinn
6052
41.5mm · Automatic$5,929
Shared: Date, Day-Date, Chronograph · Automatic

Sinn
6012
41.5mm · Automatic$5,929
Shared: Date, Day-Date, Chronograph · Automatic

Bell & Ross
BR V2-94 R.S.18
41mm · Automatic$5,616
Shared: Date, Chronograph · Automatic

Sinn
717
45mm · Automatic$5,389
Shared: Date, Chronograph, Pilot's Bezel · Automatic

Norqain
Freedom Chrono Zermatt Unplugged Special Edition
40mm · Automatic$6,573
Shared: Chronograph · Automatic

Bell & Ross
BR 03-94 R.S.18
42mm · Automatic$6,372
Shared: Date, Chronograph · Automatic

Bell & Ross
BR V2-94 BELLYTANKER BRONZE
41mm · Automatic$6,264
Shared: Date, Chronograph · Automatic

Bell & Ross
BR-03 Chrono Blacktrack
42mm · Automatic$7,776
Shared: Date, Chronograph · Automatic

Norqain
Adventure Chrono 41mm NHL Limited Edition
41mm · Automatic$6,204
Shared: Chronograph · Automatic

Norqain
Freedom 60 Chrono 40mm Enjoy Life Special Edition
40mm · Automatic$6,543
Shared: Chronograph · Automatic

Norqain
Freedom Chrono 40mm Enjoy Life Sprinkles Blue
40mm · Automatic$7,108
Shared: Chronograph · Automatic

Sinn
6000 Roségold
38.5mm · Automatic$18,090
Shared: Date, Chronograph · Automatic

Oris
Aquis Date Calibre 400
41.5mm · Automatic$5,150
Shared: Date · Automatic

Oris
Sun Wukong Artist Edition
41.5mm · Automatic$30,400
Shared: Date · Automatic

Oris
Coulson Limited Edition
41mm · Automatic$5,200
Shared: Date · Automatic

NOMOS Glashütte
Tangente Sport neomatik 42 date marine black
42mm · Automatic$6,030
Automatic · Same size

Tudor
Black Bay 58
39mm · Automatic$5,350
Automatic · Similar size

Tudor
Pelagos FXD Chrono
43mm · Automatic$6,375
Shared: Chronograph · Automatic

Tudor
Black Bay Ceramic
41mm · Automatic$6,125
Automatic · Same size

Tudor
Pelagos 39
40mm · Automatic$5,625
Automatic · Same size

Longines
ULTRA‑CHRON CARBON
43mm · Automatic$5,550
Automatic · Similar size

Longines
LONGINES SPIRIT FLYBACK PROTOTYPE
42mm · Automatic$7,400
Automatic · Same size
In the same price band· 32
Comparable watches at roughly the same money. Often the deciding click for a new buyer.

Sinn
206 ARKTIS II
43mm · Automatic$4,536
Shared caliber (Concepto C99001) · Shared: Date, Day-Date, Chronograph

Sinn
EZM 13.1
41mm · Automatic$3,780
Shared: Date, Chronograph · Automatic

Sinn
156.1
43mm · Automatic$4,266
Shared: Date, Chronograph, Pilot's Bezel · Automatic

Sinn
6099
41.5mm · Automatic$4,990
Shared: Date, Chronograph · Automatic

Glycine
Airman GMT
42mm · Automatic$2,700
Shared: Date · Automatic

Glycine
Combat Sub Vintage
42mm · Automatic$1,750
Shared: Date · Automatic

Bell & Ross
BR 126 AÉRONAVALE
43mm · Automatic$4,309
Shared: Date, Chronograph · Automatic

Bell & Ross
BR 123 24H
42mm · Automatic$3,337
Shared: Date · Automatic

Glycine
Airman Purist
42mm · Automatic$2,700
Shared: Date · Automatic

Glycine
Combat Sub Box Ceramic
41mm · Automatic$1,800
Shared: Date · Automatic

Oris
Divers Sixty‑Five 12h Calibre 400
40mm · Automatic$4,300
Shared: Date · Automatic

Nivada Grenchen
Chronomaster 41mm Automatic Chronograph
41mm · Automatic Chronograph$2,295
Shared: Chronograph · Same size

Norqain
Adventure 40mm
40mm · Automatic$4,283
Automatic · Same size

Norqain
Adventure NEVEREST 40mm Limited Edition
40mm · Automatic$5,028
Automatic · Same size

Oris
Aquis Chronograph
43.5mm · Automatic$5,000
Shared: Date, Chronograph · Automatic

Oris
Aquis Date Upcycle
41.5mm · Automatic$2,900
Shared: Date · Automatic

Oris
Big Crown ProPilot Big Date
41mm · Automatic$2,600
Shared: Date · Automatic

Norqain
NEVEREST GMT Glacier 41mm Grey Gold
41mm · Automatic$4,859
Automatic · Same size

Bell & Ross
BR 03-92 DESERT TYPE
42mm · Automatic$3,672
Shared: Date · Automatic

Longines
LEGEND DIVER 42 BLACK LACQUERED
42mm · Automatic$3,200
Automatic · Same size

Norqain
Adventure Sport JP 42mm Anthracite Grey
42mm · Automatic$3,471
Automatic · Same size

Tudor
Black Bay Pro
39mm · Automatic$5,075
Automatic · Similar size

Longines
HYDROCONQUEST MESH
41mm · Automatic$2,350
Automatic · Same size

Longines
LEGEND DIVER 42
42mm · Automatic$2,850
Automatic · Same size

Longines
SPIRIT
40mm · Automatic$2,550
Automatic · Same size

Nivada Grenchen
Chronoking Vintage Valjoux
38mm · Manual Chronograph$4,900
Shared: Date, Chronograph · Acrylic

NOMOS Glashütte
Club Sport neomatik 42 date black
42mm · Automatic$5,050
Automatic · Same size

Bell & Ross
BR V1-92 BLUE STEEL
38.5mm · Automatic$2,592
Shared: Date · Automatic

Nivada Grenchen
Chronomaster Manual
38mm · Manual Chronograph$1,975
Shared: Chronograph

Nivada Grenchen
F77 MK2 41mm Automatic
41mm · Automatic$1,460
Automatic · Same size

NOMOS Glashütte
Club automatic date Atlantic
41.5mm · Automatic$4,050
Automatic · Same size

Tudor
Pelagos FXD
42mm · Automatic$5,025
Automatic · Same size
Cheaper alternatives· 7
If the price is the only thing keeping you off this watch, these get you most of the way there for less.

Orient
Classic Watch
40mm · Automatic$245
Shared: Date · Automatic

Orient
AC0Q-40 Diver Watch
39.9mm · Automatic$370
Shared: Date · Automatic

Orient
75th Anniversary RA-AC0Q12L30B
39.9mm · Automatic$405
Shared: Date · Automatic

Orient
AC0Q-40 RA-AC0Q05P10B
39.9mm · Automatic$355
Shared: Date · Automatic

Nivada Grenchen
Depthmaster
39mm · Automatic$1,050
Automatic · Similar size

Nivada Grenchen
Antarctic Spider
38mm · Automatic$945
Shared: Date · Automatic

Nivada Grenchen
Antarctic Diver Aquamar
38mm · Automatic$1,050
Automatic · Diver-grade WR
Direct homages· 9
Watches that wear the same design language — close enough that a stranger might confuse them across the room.

Sugess
Ocean Star S421
40mm · Automatic$449
Shared: Date, Chronograph · Automatic

Sugess
Seestern S434 Pro Diver
40mm · Automatic$249
Shared: Date, Chronograph · Automatic

Sugess
Seestern Vintage S407 600T
39mm · Automatic$249
Shared: Date, Chronograph · Automatic

Sugess
Ocean Star S450 YM
40mm · Automatic$449
Shared: Date · Automatic

Seestern
Sub 300 V4
42mm · Automatic$10
Shared: Date · Automatic

Seestern
S450 Ocean Star
40mm · Automatic$299
Shared: Date · Automatic

Tudor
Black Bay
41mm · Automatic0
Automatic · Same size

Seestern
S471 Double Crown Diver
38mm · Automatic$179
Shared: Date · Automatic

Seestern
S443 Column Wheel Chronograph
40mm · Manual winding chronograph$10
Shared: Chronograph · Same size