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The Elgin National Watch Company used a set of codes to
designate types of watch parts as a component of its spare
parts inventory and ordering system. These are not the same numbers that
appear in the Elgin Genuine Material books, but these number do appear
on reorder envelopes and on parts packages. For some reason, lists
of these numbers are hard to come by. So, to aid the watchmaking
community and hobbyists, here they are...
Notes: This list came to me as a set of hand typed pages on Elgin letterhead.
I have reproduced them here as they appear on these pages. Some numbers are listed with
an empty description, some numbers are skipped, and some parts descriptions occur with
more than one number.
Elgin Part Number Codes
| B1 | Battery |
| B3 | Coil Complete |
| 1 | Arbor, Barrel |
| 1A | Arbor, Barrel - Open Type |
| 1B | Arbor, Barrel, Alarm |
| 2 | Arbor, Pallet |
| 3 | Arbor, Winding |
| 3A | Arbor, Male #3 |
| 3B | Arbor, Winding, Male #1 |
| 3C | Arbor, Winding, Male #2 |
| 3D | Arbor, Female #3 |
| 3E | Arbor, Winding, Female #1 |
| 3F | Arbor, Winding, Female #2 |
| 3G | Arbor, Winding, Male |
| 3H | Arbor, Winding, Female |
| 3J | Arbor, Alarm |
| 3L | Arbor, Winding, Male |
| 3M | Arbor, Winding, Male |
| 3N | Arbor, Winding, Female |
| 3S | Arbor, Setting |
| 4 | Balance Wheel Only, Solid |
| 4A | Balance Wheel Only, Cut Type |
| 5 | Balance Complete |
| 6 | Barrel and Cover |
| 6A | Barrel W/Brake Spring |
| 6B | Barrel Drum |
| 7 | Barrel Complete |
| 8 | Bridges, Barrel |
| 8A | Bridges, Barrel, Unfinished |
| 8B | Bridges, Combined BB and TB |
| 8C | Bridges, Barrel Alarm |
| 9 | Bridge, Balance Cock |
| 9A | Bridge, Balance Cock, Unfinished |
| 9B | Bridge, Index Wheel |
| 10 | Bridge, Lower Plate |
| 10A | Bridges, Complete, for Automatic Device |
| 10B | Pipe, Center |
| 11 | Bridge, Lower, for Autimatic Device |
| 11A | Bridge, Lower, for Autimatic Device W/Jewel |
| 12 | Bridge, Pallet |
| 13 | Bridge, Sweep Second |
| 14 | Bridge, Train |
| 14A | Bridge, Intermediate Center |
| 14B | Bridge, Escape |
| 14C | Bridge, Train, Unfinished |
| 15 | Bridge, Upper, for Automatic Device |
| 15A | Bolt, Upper Frame |
| 15B | Bridge, Upper, for Automatic Device W/Jewel |
| 16 | Bushing, Upper Center |
| 16A | Bushing, Barrel Arbor |
| 17 | Bushing, Lower Center |
| 17A | Bushing, Lower Minute Wheel Pinion |
| 18 | Clamp, Adjusting Beat |
| 18A | Clamp, Casing |
| 19 | Clamp, Endstone, Lower Balance, W/Jewel |
| 20 | Clamp, Endstone, Lower Balance, and Lower Pallet W/Jewel |
| 21 | Clamp, Endstone, Lower Balance, and Lower Escape W/Jewel |
| 22 | Clamp, Endstone, Lower Escape, W/Jewel |
| 23 | Clamp, Endstone, Upper Regulation Gear Wheel |
| 24 | Clamp, Endstone, Upper, Escape and 4th W/Jewel |
| 25 | Clamp, Endstone, Lower, Third |
| 26 | Clamp, Endstone, Upper Balance, W/Jewel |
| 27 | Cover, Ratchet Wheel |
| 28 | |
| 29 | |
| 30 | Clamp, Endstone Assembly, Upper Escape W/Jewel |
| 31 | Clamp, Endstone Assembly, 3rd and 4th Wheel W/Jewel |
| 32 | Clamp, Endstone and Jewel Assembly, Lower Forth |
| 33 | Clamp, Endstone Assembly, Upper Escape, 3rd and 4th, W/Jewel |
| 34 | Clamp, Endstone Assembly, Lower Pallet, W/Jewel |
| 35 | Clamp, Endstone Assembly, Upper Pallet, W/Jewel |
| 36 | Clamp, Endstone Assembly, Lower Escape and Pallet, W/Jewel |
| 37 | Clamp, Idler Ratchet Wheel |
| 38 | Clamp, Jewel and Setting, Sweep Upper |
| 39 | Clamp, Jewel and Setting, Sweep Lower |
| 40 | Clamp, Minute Wheel |
| 41 | Clamp, Retainer Roter |
| 41A | Clamp and Case Screw | |
| 42 | Click | |
| 42A | Click Stop | |
| 42B | Click Stop W/Spring | |
| 42C | Click Alarm | |
| 43 | Click, Complete | |
| 44 | Clutch, Winding and Setting | |
| 45 | Cock, Oscillating Wieght | |
| 45A | Core, Axle & Rachet Wheel Mounted | |
| 45B | Connector Battery | |
| 45C | Connector Battery | |
| 46 | Collet Holding, Actuated Cam Pawl Stud | |
| 46A | Collet, Hairspring | |
| 47 | Dial, Hour | |
| 48 | Dial, Minute Complete | |
| 49 | Dome, Cock, With Jewel | |
| 50 | Dome Cock, Complete Assembly | |
| 50A | Frame, Lower, W/Spring (Antichoc) | |
| 50B | Frame, Upper, W/Spring (Antichoc) | |
| 50C | Frame, Lower, Balance | |
| 50D | Frame, Upper, Balance | |
| 50E | Holder, Unlocking Wheel | |
| 50F | Hammer, Alarm | |
| 51 | Hands, Hour and Minute | |
| 51A | Hands, Second | |
| 51B | Hands, Sweep-Second | |
| 51C | Indicator, Hour (For Case Cat. 7510) | |
| 51D | Indicator, Hour (For Case Cat. 7516) | |
| 51E | Indicator, Hour (For Case Cat. 7520) | |
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A virtual