A Guide to Illinois Watch Co. size 12 Watches, Grade 410.
Run.
Date
From
To
Total
H/O
Jls
Adj.
Run.
Date
From
To
Total
H/O
Jls
Adj.
1
1913
2,558,551
2,558,570
20
H. Mod 4
23
6 Pos.
14
1921
3,921,501
3,921,600
100
O. Mod 3
23
6 Pos.
2
1913
2,561,681
2,561,700
20
O. Mod 3
23
6 Pos.
15
1921
3,921,601
3,921,700
100
O. Mod 3
23
6 Pos.
3
1913
2,589,651
2,589,700
50
O. Mod 3
23
6 Pos.
16
1921
3,921,701
3,921,800
100
O. Mod 5
23
6 Pos.
4
1914
2,596,351
2,596,400
50
H. Mod 4
23
6 Pos.
17
1921
3,950,101
3,950,200
100
O. Mod 3
23
6 Pos.
5
1914
2,652,251
2,652,300
50
O. Mod 3
23
6 Pos.
18
1921
3,960,151
3,960,200
50
O. Mod 3
23
6 Pos.
6
1916
2,966,491
2,966,500
10
O. Mod 3
23
6 Pos.
19
1921
4,004,881
4,004,900
20
H. Mod 4
23
6 Pos.
7
1919
3,433,001
3,433,100
100
O. Mod 3
23
6 Pos.
20
1923
4,209,001
4,210,000
1,000
O. Mod 5
23
6 Pos.
8
1919
3,498,401
3,498,500
100
O. Mod 3
23
6 Pos.
21
1923
4,395,301
4,395,500
200
H. Mod 6
23
6 Pos.
9
1919
3,538,051
3,538,100
50
H. Mod 4
23
6 Pos.
22
1923
4,477,001
4,477,400
400
O. Mod 5
23
6 Pos.
10
1920
3,686,901
3,687,000
100
O. Mod 3
23
6 Pos.
23
1923
4,477,401
4,477,700
300
H. Mod 6
23
6 Pos.
11
1920
3,696,691
3,696,700
10
O. Mod 3
23
6 Pos.
24
1923
4,477,701
4,478,800
300
O. Mod 5
23
6 Pos.
12
1920
3,742,201
3,742,400
200
O. Mod 5
23
6 Pos.
25
1926
4,759,501
4,759,700
200
O. Mod 5
23
6 Pos.
13
1921
3,874,101
3,874,200
100
O. Mod 6
23
6 Pos.
26
1927
4,863,001
4,864,000
1,000
O. Mod 5
23
6 Pos.
 
 
 
 
Total
4,730
 
 
 
Name
H/O
Estimate
Name
H/O
Estimate
Illinois Watch Co. (Model 3)
23 Jewels O.F.
460
Jason Weiler & Son Boston (Model 3)
23 Jewels O.F.
100
Illinois Watch Co. (Model 4)
23 Jewels H.
90
Lifetime Series [Made for R H  Macy & Co. Inc.] (Model 5)
23 Jewels O.F.
200
Illinois Watch Co. (Model 5)
23 Jewels O.F.
3,100
Precise (Model 3)
23 Jewels O.
50
Illinois Watch Co. (Model 6)
23 Jewels H.
600
The Brenner Watch, Youngstown (Model 4)
23 Jewels H.
10
Serial numbers used on this page by the kind permission of
Russel W Snyder
Grade 410 Movements found to date.
Grade 410 runs.
Last update 12/20/2015.
Grade 410,
23 extra quality ruby and sapphire jewels adjusted to 6 positions, manufactured in 1913 to 1927 a total of 4,730 movements in 26 runs make up this
grade. Models 3 and 5 open faced; models 4 and 6 hunter; bridge movements of highest quality, double roller, Illinois superior motor barrel and patent
micrometric regulator.

Observations,
The Illinois Watch Co. and Jason Weiler & Son movements have crosshatch pattern demaskeening, The Lifetime Series have a brushed nickel finish,
The Brenner Watch have a fishscale pattern and the Precise are spiral etched with wavy lined center. Models 3 & 4 are Jeweled Barrel, models 5 & 6
are Motor Barrel, most of the pillar plates are marked to show this although not all are marked correctly. Manheimer; Star Watch Case Co. cases  were
used to convert some hunter models into open faced watches, these may have been factory cased. I have moved the 23 jeweled run of model 3
movements, 3,498,401 - 3,498,500 = 100 from Autocrat grade to this grade.

Variants,
The Lifetime Series dial is not recessed into the pillar plate and have a stretched dial is fitted, they require a larger case. Fitted in 14K gold Solidarity
cases with "Lifetime Series, R H Macy & Co. Inc." on the cuvette.
 Precise marked adjusted 'SIX' positions in letters on movement and fitted in 14K gold
Solidarity case with Century Precise on cuvette.   

Description,
23 extra quality ruby and sapphire jewels; gold settings; adjusted to temperature, 6 positions and isochronism; spring tempered compensating balance,
gold screws including timing screws; steel escape wheel; double roller; gold train wheels; Breguet hairspring; patent regulator; safety center pinion;
safety recoil click; Illinois superior motor barrel; double sunk dial; is accurately constructed and highly finished in every detail.
Image of The Lifetime Series.