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Calibers produced by Gruen (United States)
The Gruen Watch Company
- Gruen 100, also known as FHF Robert 8.75'''
- Gruen 100SS
- Gruen 101, also known as FHF Robert 8.75'''
- Gruen 103, also known as FHF Robert 8'''
- Gruen 106
- Gruen 107
- Gruen 115
- Gruen 116
- Gruen 117
- Gruen 119
- Gruen 123 Quadron
- Gruen 156D, also known as PUW 1560D
- Gruen 157, also known as Marc Favre 768
- Gruen 179, also known as Universal Genéve 259
- Gruen 210
- Gruen 210SS
- Gruen 211
- Gruen 211SS
- Gruen 212
- Gruen 215
- Gruen 215SS
- Gruen 215RSS
- Gruen 216
- Gruen 216SS
- Gruen 220, also known as FHF 60
- Gruen 224
- Gruen 224SS
- Gruen 225
- Gruen 225SS
- Gruen 248, also known as AS 1977-2
- Gruen 266, also known as FHF 1144, 10.5'''
- Gruen 267, also known as FHF 1144, 10.5'''
- Gruen 270
- Gruen 270SS
- Gruen 271
- Gruen 271SS
- Gruen 272
- Gruen 275
- Gruen 285 Curvex
- Gruen 290
- Gruen 291
- Gruen 295
- Gruen 306
- Gruen 311 Curvex
- Gruen 330 Curvex
- Gruen 335
- Gruen 335N
- Gruen 335R
- Gruen 335-21
- Gruen 355
- Gruen 355C
- Gruen 362
- Gruen 363
- Gruen 366CA, also known as ETA 2363
- Gruen 366SS, also known as ETA 2360
- Gruen 370 Curvex
- Gruen 380
- Gruen 381
- Gruen 385
- Gruen 386
- Gruen 405
- Gruen 405SS
- Gruen 406
- Gruen 406SS
- Gruen 410
- Gruen 410C
- Gruen 410SS
- Gruen 411
- Gruen 411C
- Gruen 411SS
- Gruen 415
- Gruen 415R
- Gruen 415CA
- Gruen 416
- Gruen 416R
- Gruen 417
- Gruen 420
- Gruen 420SS
- Gruen 421
- Gruen 421SS
- Gruen 422
- Gruen 422R
- Gruen 423
- Gruen 425
- Gruen 425SS
- Gruen 426
- Gruen 426SS
- Gruen 430
- Gruen 431
- Gruen 435
- Gruen 440 Curvex
- Gruen 445SS, also known as Pierce 105(SC)
- Gruen 455R, also known as AS 1758
- Gruen 460
- Gruen 460SS
- Gruen 462
- Gruen 462SS
- Gruen 470
- Gruen 470SS
- Gruen 475
- Gruen 480
- Gruen 480SS
- Gruen 485, also known as Universal Genéve 240
- Gruen 487, also known as Universal Genéve 240
- Gruen 500
- Gruen 501
- Gruen 502
- Gruen 510
- Gruen 510R
- Gruen 510CA
- Gruen 510SS
- Gruen 510RSS
- Gruen 512CD
- Gruen 515SS, also known as Jeambrun 26D
- Gruen 542SS, also known as FHF 96
- Gruen 550RI, also known as Felsa 1566
- Gruen 550SS, also known as Felsa 1560
- Gruen 552SS, also known as AS 1686
- Gruen 570SS, also known as PUW 570
- Gruen 620, also known as FHF Robert 8.75'''
- Gruen 621, also known as FHF Robert 8.75'''
- Gruen 622, also known as FHF Robert 8.75'''
- Gruen 623, also known as FHF Robert 8.75'''
- Gruen 624SS, also known as Durowe 440
- Gruen 626, also known as FHF Robert 8.75'''
- Gruen 627, also known as FHF Robert 8.75'''
- Gruen 673, also known as FHF 59N
- Gruen 710
- Gruen 710CA
- Gruen 710SS
- Gruen 710RSS
- Gruen 711CA
- Gruen 711CD
- Gruen 711SS
- Gruen 712CA
- Gruen 712SS
- Gruen 730CA
- Gruen 730SS
- Gruen 731CD
- Gruen 760, also known as Alpina 760
- Gruen 763, also known as Alpina 763
- Gruen 790CA, also known as AS 2063
- Gruen 790CD, also known as AS 2066
- Gruen 790SS, also known as AS 2062
- Gruen 790ssCD, also known as AS 2066
- Gruen 819, also known as Rolex 600
- Gruen 825, also known as Alpina 827, Rolex 700
- Gruen 826, also known as Alpina 826
- Gruen 827, also known as Rolex 710
- Gruen 833
- Gruen 835, also known as Rolex 200
- Gruen 835SS, also known as Rolex 210
- Gruen 877, also known as Rolex 300
- Gruen 879, also known as Rolex 170
- Gruen 885
- Gruen 930
- Gruen 930SS
- Gruen 940RSS, also known as Venus 230
- Gruen 1067
- Gruen 1077
- Gruen N225
- Gruen N225R
- Gruen N510
- Gruen N510CA
- Gruen N510R
- Gruen N510SS
- Gruen N522CD, also known as Felsa 4019
- Gruen N580SS, also known as Felsa 4000N
- Gruen N710
- Gruen N710CA
- Gruen N710SS