IBM
Models and s/n	Y	M	D	Remarks	Ref.
00-10 USA (Black)
1065 to 10411	1933				15
10412 to 11799	1934				15
11800 to 21499	1935				15
21500 to 25999	1936				15
26000 to 29999	1937				15
30000 to 34249	1938				15
34250 to 38799	1939				15
38800 to 47299	1940				15
47300 to 61599	1941				15
61600 to 77449	1942				15
77450 to 80749	1943				15
80750 to 86199	1944				15
86200 to 97849	1945				15
97850 to 145999	1946				15
146000 to 191999	1947				15
192000 to 219960	1948-1951				15
Model A Standard(Grey)
003154 to 293320	1949				15
029321 to 065525	1950				15
0655526 to 104893	1951				15
104894 to 146998	1952				15
146999 to 204808	1953				15
204809 to 214555	1954				15
Model A Exectutive(Grey)
up to 006651	1949				15
006652 to 015970	1950				15
015971 to 025914	1951				15
025915 to 038930	1952				15
038931 to 054474	1953				15
054475 to 057219	1954				15
Model B Standard
300399	1954				15
351510	1955				15
Model B Executive
100103	1954				15
114950	1955				15
Model C Standard
00-12 USA
1000000	1959				6
1240000	1960				6
1385001	1961				6
1510001	1962				6
1643001	1963				6
1780001	1964				6
1943001	1965				6
2600001 to 2766001	1966				6
91-12 Canada
92013	1960				6
92328	1961				6
94713	1962				6
95000	1963				6
95701	1964				6
35-12 France
30001	1959				6
336196	1960				6
41983	1961				6
50560	1962				6
58052	1963				6
67139 to 75402	1964				6
76000 to 81366	1965				6
40-12, 71 Germany
20500	1959				6
28106	1960				6
42188	1961				6
60358	1962				6
79881	1963				6
99842	1964				6
117994 to 138685	1965				6
138686	1966				6
160293	1967				6
58-12 Holland
30001	1959			If country code, ie 35, is followed by 82 instead of 12 it denotes carbon ribbon attachment	6
30538 to 32010	1960				6
31401	1961				6
32620	1963				6
32980	1964				6
35582	1965				6
43878 to 48140	1966				6
31-12 U.K.
30001	1959				6
31001	1960				6
34111	1961				6
36809	1962				6
39204	1963				6
41884 to 42024	1964				6
Model C Executive
91-42 Canada
90327	1959				6
92014	1960				6
94713	1960				6
95000 to 95700	1962				6
71 or 42, 40 Germany
5136	1959				6
6349	1960				6
9540	1961				6
13954	1962				6
20196	1963				6
28770	1964				6
39253 to 51999	1965				6
52000	1966				6
66486	1967				6
31-55 UK
50001	1959				6
50348	1960				6
52438	1961				6
54554 to 56054	1962				6
56055	1963				6
57858 to 57894	1964				6
08-58 Holland
40001	1962				6
41211	1963				6
43228	1964				6
46734-48639	1965				6
35-42 France
30001	1961				6
38580	1962				6
42282	1963				6
48639	1964				6
55000 to 58548	1965				6
00-42 U.S.A.
2001000	1961				6
2097001	1962				6
2129001	1963				6
2164001	1964				6
2206001	1965				6
2249001 to 2304000	1966				6
Model 72 Selectric
58-08 Holland
8001001	1961				6
8001602	1962				6
8013867	1963				6
8028333	1964				6
8046833	1965				6
8070862	1966				6
8111382	1967				6
8155203	1968				6
Model D Standard
71-12 Germany
200 001	1967				6
210479	1968				6
244141	1969				6
Model D Executive
71-42 Germany
600000	1967				6
615949	1968				6
638679	1969				6