A Guide to Illinois Watch Co. size 12 watches, Grade 403.
Run.
Date
From
To
Total
H/O
Jls
Adj.
Run.
Date
From
To
Total
H/O
Jls
Adj.
1
1911
2,337,081
2,337,100
20
O
15
Unadj.
51
1915
2,864,901
2,865,000
100
O
15
Unadj.
2
1911
2,386,501
2,386,530
30
O
15
Unadj.
52
1915
2,867,001
2,867,300
300
O
15
Unadj.
3
1912
2,406,051
2,406,080
30
H
15
Unadj.
53
1915
2,870,201
2,870,400
200
H
15
Unadj.
4
1912
2,488,781
2,488,880
100
O
15
Unadj.
54
1916
2,886,101
2,886,700
600
O
15
Unadj.
5
1913
2,521,001
2,521,600
600
O
15
Unadj.
55
1916
2,893,301
2,893,500
200
O
15
Unadj.
6
1913
2,524,001
2,524,300
300
H
15
Unadj.
56
1916
2,897,501
2,898,000
500
O
15
Unadj.
7
1913
2,551,701
2,552,000
300
O
15
Unadj.
57
1916
2,904,001
2,904,500
500
O
15
Unadj.
8
1913
2,558,101
2,558,200
100
H
15
Unadj.
58
1916
2,908,101
2,908,500
400
H
15
Unadj.
9
1913
2,558,571
2,558,580
10
H
15
Unadj.
59
1916
2,911,501
2,911,700
200
O
15
Unadj.
10
1913
2,561,001
2,561,300
300
O
15
Unadj.
60
1916
2,914,501
2,914,900
400
O
15
Unadj.
11
1913
2,569,001
2,569,600
600
O
15
Unadj.
61
1916
2,919,601
2,919,900
300
O
15
Unadj.
12
1913
2,573,701
2,574,000
300
H
15
Unadj.
62
1916
2,931,201
2,931,500
300
O
15
Unadj.
13
1913
2,589,301
2,589,400
100
O
15
Unadj.
63
1916
2,933,301
2,933,500
200
O
15
Unadj.
14
1913
2,594,501
2,594,800
300
H
15
Unadj.
64
1916
2,935,101
2,935,500
400
O
15
Unadj.
15
1914
2,605,001
2,605,600
600
O
15
Unadj.
65
1916
2,944,401
2,944,500
100
O
15
Unadj.
16
1914
2,632,201
2,632,500
300
H
15
Unadj.
66
1916
2,946,601
2,946,650
50
H
15
Unadj.
17
1914
2,640,001
2,640,100
100
O
15
Unadj.
67
1916
2,950,701
2,951,000
300
O
15
Unadj.
18
1914
2,641,301
2,641,600
300
O
15
Unadj.
68
1916
2,959,001
2,960,000
1,000
O
15
Unadj.
19
1914
2,646,201
2,646,600
400
O
15
Unadj.
69
1916
2,986,001
2,987,000
1,000
O
15
Unadj.
20
1914
2,652,401
2,653,000
600
O
15
Unadj.
70
1916
2,999,001
3,000,000
1,000
O
15
Unadj.
21
1914
2,664,101
2,664,300
200
H
15
Unadj.
71
1916
3,022,001
3,022,900
900
H
15
Unadj.
22
1914
2,671,601
2,672,000
400
H
15
Unadj.
72
1916
3,052,001
3,053,000
1,000
O
15
Unadj.
23
1914
2,687,701
2,687,800
100
O
15
Unadj.
73
1917
3,059,001
3,060,000
1,000
O
15
Unadj.
24
1914
2,687,901
2,688,000
100
O
15
Unadj.
74
1917
3,072,001
3,073,000
1,000
O
15
Unadj.
25
1915
2,701,701
2,702,000
300
O
15
Unadj.
75
1917
3,082,001
3,083,000
1,000
O
15
Unadj.
26
1915
2,718,001
2,718,100
100
O
15
Unadj.
76
1917
3,088,001
3,089,000
1,000
O
15
Unadj.
27
1915
2,718,901
2,719,000
100
H
15
Unadj.
77
1917
3,105,001
3,106,000
1,000
O
15
Unadj.
28
1915
2,722,001
2,722,300
300
H
15
Unadj.
78
1917
3,137,001
3,138,000
1,000
H
15
Unadj.
29
1915
2,723,101
2,723,400
300
O
15
Unadj.
79
1917
3,149,001
3,149,700
700
O
15
Unadj.
30
1915
2,733,401
2,733,600
200
O
15
Unadj.
80
1917
3,149,701
3,149,800
100
O
15
Unadj.
31
1915
2,743,901
2,744,000
100
O
15
Unadj.
81
1917
3,149,801
3,150,000
200
O
15
Unadj.
32
1915
2,748,001
2,748,200
200
O
15
Unadj.
82
1917
3,163,001
3,164,000
1,000
O
15
Unadj.
33
1915
2,752,001
2,752,400
400
H
15
Unadj.
83
1917
3,194,001
3,195,000
1,000
O
15
Unadj.
34
1915
2,753,201
2,753,300
100
O
15
Unadj.
84
1917
3,196,901
3,197,000
100
O
15
Unadj.
35
1915
2,763,201
2,763,600
400
H
15
Unadj.
85
1917
3,204,001
3,204,400
400
H
15
Unadj.
36
1915
2,776,401
2,776,700
300
O
15
Unadj.
86
1917
3,204,401
3,204,500
100
H
15
Unadj.
37
1915
2,783,221
2,783,250
30
O
15
Unadj.
87
1917
3,204,701
3,205,000
300
O
15
Unadj.
38
1915
2,783,801
2,784,000
200
H
15
Unadj.
88
1917
3,212,001
3,213,000
1,000
O
15
Unadj.
39
1915
2,791,001
2,791,100
100
H
15
Unadj.
89
1917
3,225,001
3,225,900
900
O
15
Unadj.
40
1915
2,791,501
2,791,900
400
O
15
Unadj.
90
1918
3,260,001
3,260,450
450
O
15
Unadj.
41
1915
2,820,101
2,820,200
100
H
15
Unadj.
91
1918
3,260,501
3,261,000
500
O
15
Unadj.
42
1915
2,820,201
2,820,300
100
O
15
Unadj.
92
1918
3,268,001
3,268,700
700
H
15
Unadj.
43
1915
2,832,401
2,832,700
300
O
15
Unadj.
93
1918
3,282,001
3,283,000
1,000
O
15
Unadj.
44
1915
2,837,571
2,837,590
20
O
15
Unadj.
94
1918
3,298,001
3,299,000
1,000
O
15
Unadj.
45
1915
2,837,901
2,838,000
100
O
15
Unadj.
95
1918
3,328,001
3,328,900
900
O
15
Unadj.
46
1915
2,842,001
2,842,200
200
O
15
Unadj.
96
1918
3,336,001
3,337,000
1,000
H
15
Unadj.
47
1915
2,848,001
2,848,300
300
O
15
Unadj.
97
1918
3,350,001
3,351,000
1,000
O
15
Unadj.
48
1915
2,849,401
2,849,600
200
H
15
Unadj.
98
1918
3,412,001
3,413,000
1,000
O
15
Unadj.
49
1915
2,850,201
2,850,600
400
O
15
Unadj.
99
1919
3,454,001
3,454,400
400
H
15
Unadj.
50
1915
2,856,701
2,857,000
300
O
15
Unadj.
100
1919
3,488,001
3,488,900
900
O
15
Unadj.
    Total
42,340
 
Name
H/O
Estimate
Name
H/O
Estimate
Ariston  U.S.A. [Made for Marshall Field]
15 Jewels O.F.
1,000
Kruckmeyer & Cohn, Evansville Ind.
15 Jewels H.
50
Ariston Jr. U.S.A.  [Made for Marshall Field]
15 Jewels O.F.
30
Illinois
15 Jewels O.F.
4,100
Bovard & Son, Philadelphia
15 Jewels O.F.
50
Illinois
15 Jewels H.
1,350
Brodnax Menphis, Tenn.
15 Jewels O.F.
100
Illinois Watch Co.
15 Jewels O.F.
24,800
Chronos
15 Jewels O.F.
100
Illinois Watch Co.
15 Jewels H.
6,800
Constant, St Louis [Made for Mermod-Jaccard & King  Co.]
15 Jewels O.F.
50
Daniel Low & Co. Salem Mass.
15 Jewels O.F.
200
Dependon, John V Farwell Chicago.
15 Jewels O.F.
100
Archie K. May, York Pa. 'Arkema Special on dial'
15 Jewels H.
100
Diplomat
15 Jewels O.F.
500
Precise
15 Jewels O.F.
200
Diplomat
15 Jewels H.
100
Railroad Dispatcher Extra [Made for J M Roberts Pitts. Pa.]
15 Jewels O.F.
150
B Gutter & Sons, New York
15 Jewels O.F.
100
Railroad Dispatcher Extra [Made for J M Roberts Pitts. Pa.]
15 Jewels H.
100
Hartdegen & Co. Newark NJ.
15 Jewels O.F.
100
E Schenuit, Philadelphia
15 Jewels O.F.
50
Hartdegen & Co. Newark, 'Special'
15 Jewels O.F.
100
Charles Schwartz & Son, Washington DC.
15 Jewels O.F.
100
R Hess, Philadelphia
15 Jewels O.F.
30
Starr & Moss, Philadelphia
15 Jewels O.F.
100
H E Hillman & Sons Wheeling, W. Va.
15 Jewels O.F.
10
A F Stauver,  Wheeling, W. Va.
15 Jewels O.F.
100
Kay & Co. 'Made for'
15 Jewels O.F.
300
Jno Steocker's & Sons, Syracuse NY
15 Jewels O.F.
50
Klivans Bros. 'Made For'
15 Jewels O.F.
70
     
Grade 403 Movements found to date.
Grade 403 Runs.
Serial numbers used on this page by the kind permission of  
Russell W Snyder
Last update 06/19/2016.
Grade 403,
15 jewels unadjusted, manufactured from 1911 to 1919 a total of 42,340 movements in 100 runs make up this grade. Model 3 open faced and model 4
hunter; bridge movements of medium quality,  with single roller and patent micrometric regulator. Open faced 33,450 in 73 runs and Hunter 8,990 in 27
runs.

Observations,
The movements are mostly broad striped pattern demaskeening with the majority named Illinois and Illinois Watch Co., named and private labels make
up the remainder.

Variants,
Two types of escapement bridge can be found, the majority have the two fingered bridge. The Ariston Jr. movements have a full plate bridge.

Description,
15 jewels, polished settings, spring tempered compensating balance with timing screws, round arm center wheel; Swiss Breguet hairspring; patent
micrometric screw regulator; safety screw center pinion; perfect self locking setting device; safety recoil click; demaskeened in broad striped pattern.
Images of models in this grade showing escapement bridges.