A Guide to Illinois Watch Co. size 12 Watches, Grade 299.
Run.
Date
From
To
Total
H/O
Jls
Adj.
Run.
Date
From
To
Total
H/O
Jls
Adj.
1
1905
1,780,801
1,780,900
100
H
21
5 Pos.
18
1909
2,133,191
2,133,200
10
H
21
5 Pos.
2
1905
1,780,901
1,781,000
100
O
21
5 Pos.
19
1909
2,152,401
2,152,490
90
O
21
5 Pos.
3
1905
1,781,701
1,781,800
100
H
21
5 Pos.
20
1909
2,152,491
2,152,500
10
O
23
6 Pos.
4
1906
1,921,951
1,921,970
20
H
21
5 Pos.
21
1909
2,152,701
2,152,800
100
H
21
5 Pos.
5
1906
1,921,971
1,921,980
10
H
23
5 Pos.
22
1909
2,208,001
2,208,100
100
O
21
5 Pos.
6
1906
1,921,981
1,922,000
20
H
21
5 Pos.
23
1909
2,208,101
2,208,200
100
O
23
5 Pos.
7
1906
1,929,001
1,929,100
100
O
21
5 Pos.
24
1909
2,208,201
2,208,300
100
H
21
5 Pos.
8
1907
2,011,301
2,011,420
120
O
21
5 Pos.
25
1909
2,208,301
2,208,400
100
H
23
5 & 6 Pos.
9
1907
2,011,421
2,011,430
10
O
23
5 Pos.
26
1909
2,208,401
2,208,500
100
O
23
5 Pos.
10
1907
2,011,431
2,011,450
20
O
21
5 Pos.
27
1910
2,223,401
2,223,500
100
O
21
5 Pos.
11
1907
2,011,451
2,011,455
5
O
21
5 Pos.
28
1910
2,276,201
2,276,500
300
O
21
5 Pos.
12
1907
2,011,456
2,011,460
5
O
23
5 Pos.
29
1910
2,281,601
2,281,700
100
H
21
5 Pos.
13
1907
2,011,461
2,011,465
5
O
21
5 Pos.
30
1910
2,296,001
2,296,200
200
H
21
5 Pos.
14
1907
2,011,466
2,011,470
5
O
23
5 Pos.
31
1911
2,328,651
2,328,750
100
O
21
5 Pos.
15
1907
2,011,471
2,011,500
30
O
21
5 Pos.
32
1911
2,340,151
2,340,300
150
H
21
5 Pos.
16
1907
2,018,301
2,018,600
300
O
21
5 Pos.
33
1912
2,386,301
2,386,500
200
O
21
5 Pos.
17
1909
2,133,116
2,133,155
40
O
21
5 Pos.
34
1912
2,450,301
2,450,400
100
H
21
5 Pos.
 
 
Total
2,950
 
Name
H/O
Estimate
Name
H/O
Estimate
Ariston [made for Marshall Field & Co. Chicago.]
21 Jewels O.F.
30
Herald Square [made for R C Macy & Co.]
21 Jewels O.F.
20
Ariston [made for Marshall Field & Co. Chicago.]
21 Jewels H.
50
Illinois Watch Co.
21 Jewels O.F.
1,110
Ariston [made for Marshall Field & Co. Chicago.]
23 Jewels O.F.
10
Illinois Watch Co.
21 Jewels H.
560
Ariston [made for Marshall Field & Co. Chicago.]
23 Jewels H.
20
Illinois Watch Co.
23 Jewels O.F.
100
Bankers, St Louis U.S.A. [made for Mermod Jaccard & King]
21 Jewels O.F.
10
Illinois Watch Co.
23 Jewels H.
80
Bohm-Allen Co. Denver Colo.
21 Jewels O.F.
5
Interstate Chronometer [made for Sears Roebuck Co.]
21 Jewels O.F.
100
Chronos
21 Jewels O.F.
65
Lebolt  & Company New York-Chicago.
21 Jewels O.F.
50
Daynes Jewelry, Salt Lake City.
21 Jewels O.F.
20
Phelps & Perry, New York
21 Jewels O.F.
30
Dependon, John V Farwell Company Chicago.
21 Jewels O.F.
15
Phelps & Perry, New York
23 Jewels O.F.
100
Dependon, John V Farwell Company Chicago.
21 Jewels H.
10
Rowe Bros, Chicago
21 Jewels O.F.
10
Benjamin Franklin USA. [made for OsKamp Nolting Co. Ohio.]
21 Jewels O.F.
45
John Wanamaker, Philadelphia & New York.
21 Jewels O.F.
50
Benjamin Franklin USA. [made for OsKamp Nolting Co. Ohio.]
21 Jewels H.
75
A E Warner, Baltimore Md.
21 Jewels O.F.
40
Hennegen-Bates, Baltimore MD.
21 Jewels H.
25
     
Grade 299 Movements found to date.
Grade 299 runs.
Serial numbers used on this page by the kind permission of
Russell W Snyder
Last update 08/13/2017.
Grade 299,
21,23 jewels extra quality ruby jewels adjusted to 5 and 6 positions, manufactured from 1905 to 1912 a total of 2950 movements in 34 runs make up
this grade. Model 1 open face and model 2 hunter; 3/4 plate movements of the highest quality, with double roller and micrometric regulator. Open
faced 1840 in 21 runs and hunter 1,110 in 13 runs.

Observations,
The movements have mostly fishscale pattern demaskeening with the majority named Illinois Watch Co. private labels make up the remainder.
Advertised as the best size 12 watch of this era and sold as movements only. Most watches have Illinois Watch Co. marked on dials and movements
in Old English Script. Ariston models come in 21 and 23 jewels with the 23 jewelled movements adjusted to 6 positions. Two types of mounts were
used on the pallet jewels, a figure of 8 and a full cover plate mount both recessed have been observed.

Variants,
two types of escapement bridge can be found, the majority have the two fingered bridge. The Interstate Chromometer movements have a one finger
bridge and a triangular bridge with two screws on the escapement.

Description,
21 and 23 extra quality ruby jewels, gold settings; accurately adjusted to 5 and 6 positions isochronism, very carefully timed; compensating hard
balance with gold screws, including timing screws; entire escapement exposed; capped jeweled and hand finished conical pivots; hardened, polished,
beveled steel escape wheel; highly polished gold train; best quality Swiss Breguet  hairspring; patent safety center pinion; best quality Swiss
mainspring; patent micrometric screw regulator; highly polished concave visible winding wheels; all steel parts highly polished; recoil click; glass
enamel dial fitted into recess of plate artistically demaskeened; black enamel lettering.
Image of a 21 Jeweled Illinois Watch Co.