Smith & Wesson Date Of Manufacture By Serial Number

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I copied this information from another forum...hope it helps ......for reference only:
&W revolver names before World War II
Name Caliber Frame
.22 Hand Ejector Ladysmith 22 Long M
.22/32 Target 22 Long Rifle I
.22 Outdoorsman 22 Long Rifle K
.32 Hand Ejector (round Butt) 32 S&W Long I
.32 Regulation Police (Square Butt) 32 S&W Long I
.32-20 Hand Ejector 32-20 Win. K
.38 Military&Police 38 Spl K
.38 Hand Ejector (same as above, with
adjustable sights)
.38 Regulation Police (Square Butt) 38 S&W I
.38 Terrier 2' Round Butt 38 S&W I
.38/44 Heavy Duty (fixed sights) 38 Spl N
.38/44 Outdoorsman (Adj. Sights) 38 Spl N
.357 Magnum 357 Mag N
.44 HAnd Ejector Military Model 44 Spl N
.44 Hand ejector Model 1926 44 Spl N
(shrouded extractor rod)
.45 U.S. Army Revolver, Model 1917 45 ACP N
.455 Hand ejector British Service 455 Mark II N
Letter designations assigned S&W Revolvers 1900-1930
32 Double Action R
32 Safety Hammerless G
38 Single Action S
38 Double Action D
38 Safety Hammerless Y
44 Double Action L
22 Hand Ejector M
32 Hand ejector I
38 Military and Police K
44 Hand Ejector N
38 Double Action Perfect P
22 Perfect Single Shot T
35 Automatic A
32 Regulation Police B
38 Regulation Police E
22/32 Heavy Frame Target V
Factory Model/caliber designation begun in 1930s
22/32 Target IT22 Square Butt
22/32 Kit Gun IT22 Round Butt
K-22 Masterpiece KT22
32 Hand Ejector I32 Round Butt
32 Regulation Police I32 Square Butt
K-32 Masterpiece KT32
38 Regulation Police I38 Square Butt
38 S&W Terrier I32 Round Butt
38 Military & Police K38
38/44 Heavy Duty N38
K-38 Masterpiece KT38
38/44 Outdoorsman NT38
357 Magnum NT357
1926 Model 44 Military N44
1926 Model 44 Target NT44
1917 Army N45
S&W Model Listing
Model year year Frame Caliber Name
intro Discon Size
10 1899 K 38 Spl Military & Police
10 HB 1960 K 38 Spl Military & Police Heavy Barrel
11 1936 1965 K 38 S&W Military & Police
12 1953 1986 KA 38 Spl Military & Police Airweight
13 1974 K 357 Mag 357 Magnum M&P
14 1947 1982 KT 38 Spl K-38 Masterpiece
15 1949 KT 38 Spl K-38 Combat Masterpiece
16 1947 1973 KT 32 S&W Long K-32 Masterpiece
17 1946 KT 22 LR K-22 Masterpiece
18 1949 1986 KT 22 LR K-22 Combat Masterpiece
19 1955 KT 357 Mag 357 Combat Magnum
20 1930 1966 N 38 Spl 38/44 Heavy Duty
21 1908 1966 N 44 Spl 1950 Model 44 Military
22 1917 1966 N 45 ACP 1950 Model 45 Army
23 1931 1966 NT 38 Spl 38/44 Outdoorsman
24 1908 1966 NT 44 Spl 1950 Model 44 Target
24 1984 1984 NT 44 Spl 7500 units reintroduced
25 1955 1983 NT 45 ACP 1955 Model 45 Target
25-3 1977 1977 NT 45 Colt 125th Commemorative
25-4 1977 1977 NT 45 Colt 125th Delux Comm
25-5 1978 NT 45 Colt 45 Colt
26 1950 1966 NT 45 ACP 1950 45 Target Light Barrel
27 1935 NT 357 Mag 357 Magnum
28 1954 1986 NT 357 Mag 357 Highway Patrolman
29 1955 NT 44 Mag 44 Magnum
30 1896 1976 I&J 32 S&W Long 32 Hand Ejector
31 1917 I&J 32 S&W Long 32 Regulation Police
32 1936 1974 I&J 38 S&W 38 Terrier
33 1917 1974 I&J 38 S&W 38 Regulation Police
34 1936 I&J 22 LR 22/32 Kit Gun 4' barrel
35 1911 1973 I&J 22 LR 22/32 Target 6' Barrel
36 1950 J 38 Spl 38 Chief Special
37 1952 JA 38 Spl 38 Chief Special Airweight
38 1955 JAC 38 Spl Bodyguard
39 1954 1981 Auto 9mm 9mm Double Action
both alloy and steel
39-1 1960 1960 Auto 38 AMU Commonly called M-52A
alloy
40 1952 1974 JS 38 Spl Centennial
41 1952 Auto 22 LR 22 Semi-Automatic
41-1 1960 1972 Auto 22 short 22 Short Semi-Auto
42 1953 1974 JAT 38 Spl Centennial Airweight
43 1954 1974 JAT 22 LR 22/32 Kit Gun Airweight
44 1954 1959 Auto 9mm 9mm Semi, Single Action
alloy
45 1936 1965 K 22 LR 22 Military & Police
46 1959 1968 Auto 22 LR 22 Semi Auto
47 Experimental number used on several guns
48 1959 1986 KTM 22 WMRF K-22 Masterpiece MRF
49 1959 JC 38 Spl Bodyguard Steel Frame
50 1955 1975 JT 38 Spl 38 Chief Special Target
51 1960 1974 JTM 22 WMRF 22/32 MRF Kit Gun
52 1961 Auto 38 Spl 38 Chief Special Target
Steel
52-A See Model 39-1
53 1961 1974 KTC 22 Jet 22 center fire magnum
54 Experimental never issued
55 Experimental never issued
56 1962 1963 KT 38 Spl KTX 38 Became Mod 15 2' bl.
57 1964 NT 41 Mag 41 Magnum
58 1964 1978 N 41 Mag 41 Magnum Military& Police
59 1971 1981 Auto 9mm 14 shot 9mm Semi-Auto
Alloy
60 1965 J 38 Spl 38 Chief Special Stainless
61 1970 1973 Auto 22 LR 22 Escort
62 Experimental never issued
63 1977 JT 22 LR 1977 22/32 Kit Gun Stainless
64 1970 K 38 Spl 38 Military&Police Stainless
65 1974 K 357 Mag 357 Mag M&P Stainless
66 1971 KT 357 Mag 357 Combat Mag Stainless
67 1972 KT 38 Spl 38 Combat Masterpiece Stainless
68 1976 1976 KT 38 Spl California Highway Patrol
Model Stainless
69/75 Not officially assigned -- used experimentally
76 1968 1974 Auto 9mm Machine Pistol
77 1970 1978 22 cal Air rifle
78 1971 1978 22 Cal CO2 Pellet Pistol
79 1971 1978 177 Cal CO2 Pellet Pistol
80 1975 1978 177 BB CO2 Semi Auto Rifle
New Model Numbering System
--------------------------
147-A 1979 1979 9mm 14 shot DA steel frame Model 59
325PD 2003 N 6 shot 45 ACP, 2.5' barrel, Scandium Frame
329PD 2003 N 6 shot 44 Magnum, Scandium Frame, Stainless Brl, Ti Cylinder
340 J 5 shot 357 Magnum, Scandium Frame, shrouded/internal hammer
396 L 5 shot 44 Special, 3-1/8' barrel, Aluminum alloy frame
439 1979 9mm 8 shot DA Semi Auto Alloy
459 1979 9mm 14 shot DA Semi Auto Alloy
469 1983 9mm 12 Shot DA Semi Auto Alloy
500 2003 X 5 shot 500 S&W Magnum
520 1980 1980 N 357 Mag, Fixed Sights
539 1980 1983 9mm 8 shot DA semi auto Carbon Steel
547 1980 1985 K Steel 9mm Military & Police
559 1980 1983 Auto 9mm 14 shot DA Semi Auto Carbon Steel
581 1980 L 357 Mag Distinguished Service Magnum
586 1980 L 357 Mag Distinguished Combat Magnum
610 N 10 mm, 6 shot, stainless
624 1985 1986 NT 44 Spl 1985 Target Stainless
625 N 45 ACP and 45 Colt Stainless
627 N 357 Magnum, Stainless
629 1979 NT 44 Mag Stainless
629 Classic N 44 Mag, Stainless, full underlug
639 1982 Auto 9mm 8 shot DA Semi Auto Stainless
645 1985 Auto 45ACP DA Semi Auto Stainless
649 1985 JC 38 Spl Bodyguard Stainless
650 1982 JM 22 WMRF Service Kit Gun Stainless
651 1982 JTM 22 WMRF Target Kit Gun Stainless
657 N 41 Magnum, 6 shot, Stainless
659 1982 Auto 9mm 14 shot DA semi Auto Stainless
669 1985 Auto 9mm 12 shot DA Semi Auto Stainless
681 1980 L 357 Mag Distinguished Service Mag Stainless
686 1980 L 357 Mag Distinguished Combat Mag Stainless
686+ L 357 Mag, 7 shot cylinder, Stainless
SW1911 2003 45 ACP 1911
Model and Dash numbering system
--------------------------------
Model 10
-1 1959 Heavy Barrel
-2 1961 Changed extractor rod thread to LH on standard barrel
-3 1961 Same as above, for heavy barrel
-4 1962 Screw in front of trigger eliminated
-5 1962 1/10' to 1/8' front sight, on standard barrel
-5 1962 Screw in front of trigger guard eliminated on
heavy barrel model
-7 1977 Change to put gas ring from yoke to cylinder
-8 1977 Change to put gas ring from yoke to cylinder
on heavy barrel model
Model 12 1957
-1 1962 Change extractor rod to LH thread, eliminate
screw in front of trigger guard
-2 1962 Front sight changed from 1/10' to 1/8'
-3 1977 Gas ring on yoke to cylinder
-4 1984 Change frame thickness to same as all K frames
Model 13 No designation used to avoid confusion with air force model
13 air crewman
Model 13
-1 1974 Introduced
-2 1977 Change back to gas ring on cylinder
-3 1982 eliminate cylinder counterbore
Model 14,15,16,17,18,48,53 (all start without dash in 1957)
-1 1959 Change to LH extractor rod thread
-2 1961 Cylinder stop changed, hole in front of trigger
guard eliminated
-3 1967 Relocation of rear sight leaf screw
-4 1977 Changed gas ring from yoke to cylinder
19 All of the above changes and
-5 1982 Eliminate cylinder counterbore
N-Frame Model Blue
------------------
Model 20,21,22,23,24,25 (except 25-5) 26,27,28,29
-1 1960 Change to LH thread
-2 1961 Cylinder stop changed, hole in front of trigger
guard eliminated
-3 1982 Eliminate cylinder counterbore (magnums only)
-4 2004 Thunder Ranch 44 Special, fixed sight
Model 57 1964 Introduced
-1 1982 Eliminate cylinder counterbore
Model 629 1980 Introduced
-1 1982 Eliminate cylinder counterbore
Model 25-5 1978 -5 means 45 Colt caliber
125'th anniversary model, -3 (standard) -4 (delux)
both of these used a shorter than standard cylinder.
-7 1985 45 Colt, 5' barrel, unfluted cylinder
K-Frame Stainless Models
------------------------
64 1970 Introduced
-1 1972 Heavy barrel
-2 1977 2' standard barrel, gas ring from yoke to cylinder
-3 1977 Same as above, for heavy barrel
65 -1 1974 introduced
-2 1977 gas ring from yoke to cylinder
-3 1982 Eliminate cylinder counterbore
66 1971 introduced
-1 1977 Gas ring from yoke to cylinder
-2 1982 Eliminate cylinder counterbore
67 1972 introduced
-1 1977 gas ring from yoke to cylinder
39 1957 start of model numbering system
-1, 1961 Made in 38 AMU cartridge for military 87 made.
52-A -2 1971 Change of extractor
41 1957 start of model numbering system
-1 1960 22 Short chambering
(dash number not always stamped)
52 1961 introduced
-1 1963 Single action only
-2 1971 Changed extractor
52-A See model 39-1
59 1971 introduced, no dash numbers used during production
61 1970 introduced in March
-1 May '70 Add magazine safety
-2 Sep '70 Addition of barrel nut
-3 1971 Forged Al frame
76 1968 introduced, discontinued 1974 no dash numbers used
Small Frame Revolvers
---------------------
Model 30, 31, 32, 33, 34, 35
1957 Start of numbering system
-1 1961 Change from I frame to J frame
36 -1 1967 Indicates 3' heavy barrel
37, 38, 40, 42, 43, 49, 63, 649, 650, 651
No dash numbers ued on above numbers
60 1965 Introduced
-1 1972 Heavy barrel variation made in 1972, not marketed
limited production only
SCREWS
5 screw:
4 screws on the side(one normally under the grips) is the original way to hold the side plate on.
The one in front of the trigger guard, the fifth screw retained the cylinder lock spring.
4 screw;
One of the screws holding the side plate on was dropped in the late 50's making a 4 screw S&W a
3 screw;
The screw in front of the trigger guard was dropped in 1962 making all later guns 3 screw.
continued next post...............