MODEL 12
RECORDS AT THE FACTORY INDICATE THE FOLLOWING SERIAL NUMBERS WERE
ASSIGl\TED AT THE END OF THE CALENDAR YEAR.
1912 – 5308
13 – 32418
14 – 79765
15 – 109515
16 – 136412
17 – 159391
18 – 183461
19 – 219457
20 – 247458
21 – 267253
22 – 304314
23 – 346319
24 – 385196
25 – 423056
26 – 464564
27 – 510693
28 – 557850
29 – 600834
30 – 626996
31 – 651255
32 – 660110
33 – 664544
34 – 673994
35 – 686978
36 – 720316
37 – 754250
38 – 779455
39 – 814121
40 – 856499
41 – 907431
42 – 958303
43 – 975640
44 – 975727
45 – 990004
46 – 1029152
47- 1102371
48 – 1176055
49 – 1214041
50 – 1252028
51 – 1290015
52 – 1328002
53 – 1399996
54 – 1471990
55 – 1541929
56 – 1611868
57 – 1651435
58 – 1690999
59 – 1795500
60 – 1800000
61-
62 – 1956990
63 – 1962001
A CLEAN UP OF PRODUCTION TOOK PLACE FROM 1964 THROUGH 66 WlTH THE ENDING SERIAL #1970875
1972 – Y2000100 TO Y2006396
73 – Y2015662
74 – Y2022061
75 – Y2024478
76 – Y2025482
77 – Y2025874
78 – Y2026156
79 – Y2026399
Vince
Southern Oregon
NRA member
Fraternal Order of Eagles
“There is but one answer to be made to the dynamite bomb and that can best be made by the Winchester rifle.”
Teddy Roosevelt
Vince,
The information you just posted is erroneous, and it is a copy of what George Madis published. The original Winchester factory Polishing Room serialization records at the Cody Firearms Museum have much different information.
The year 1912 actually ended with serial number 9266, and each year thereafter is very notably different than what you posted.
Bert
WACA Historian & Board of Director Member #6571L
Sorry, I got that info off the Wichester website a few years ago. You would think THEY might get something as basic as this info right.
Vince
Southern Oregon
NRA member
Fraternal Order of Eagles
“There is but one answer to be made to the dynamite bomb and that can best be made by the Winchester rifle.”
Teddy Roosevelt
Vince said
Sorry, I got that info off the Wichester website a few years ago. You would think THEY might get something as basic as this info right.
No problem. The “THEY” you are referring to is not truly “Winchester”. The website is owned and operated by the Browning Arms Company, which is a subsiderary of F.N. Herstal. The vast majority of the Winchester DOM information they have listed was copied from George Madis’ book. They have none of the original Winchester Repeating Arms Company records.
Bert
WACA Historian & Board of Director Member #6571L

Bert H. said
Winchester introduced the Model 1200 in 1964, and they began using an “L” prefix on the serial numbers in 1968, so your gun predates that date.
Bert
I have a P prefix on all of my serial numbers. Sears and Roebuck Model 200. Supposed to be Winchester Model 1200’s according to the crossover list in the Blue Book of Gun Values.
Turkey53 said
Bert H. said
Winchester introduced the Model 1200 in 1964, and they began using an “L” prefix on the serial numbers in 1968, so your gun predates that date.
BertI have a P prefix on all of my serial numbers. Sears and Roebuck Model 200. Supposed to be Winchester Model 1200’s according to the crossover list in the Blue Book of Gun Values.
The Sears & Roebuck Model 200 is a different Model, which is why it has a “P” prefix.
Bert
WACA Historian & Board of Director Member #6571L
Tom D said
The original poster’s shotgun is much earlier than 1983 because the Military issue Model 1200s start is the 400,000 range, and they were from contracts starting in 1968.
Tom,
I agree. Model 1200 serial number 137965 is definitely pre-1968, most likely late 1964 or early 1965. As I mentioned earlier in this topic, the “L” prefix was added in late 1968 to be in compliance with the Gun Control Act (GCA) enacted in November of 1968. Any Model 1200 found without an “L” prefix predate November 1968.
Bert
WACA Historian & Board of Director Member #6571L
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