These are the American serial numbers beginning with one letter.
They are in the following order:
N
L
K
B
H
D
G

Notice in the "G" series that Singer used G 1 in 1909 through G 9,999,999 in 1923
then they used G 0,000,001 through G 0,998,000 in 1924.
This means G 55555 is not the same as G 0055555.

Many of these serial numbers have been reported by individual Featherweight Fanatics.
Unless indicated by an "*" they are not the actual high or low serial numbers allotted by Singer.

Date Low in allotment High in allotment Model Qty in allotment
1900 N000001
4/9/00 N241069 15
6/23/00 N318752 15
7/30/00 N375123 N395863 27
7/28/00 N490640 27
N559723 15-30
8/1/00 66
8/10/00 N412604 28
10/29/00 N509703 27
12/12/00 N626346 27
1900 N627300
Unknown N875456 27
1901 L627301
1/1901 L632692
2/8/01 L697993 27
6/10/01 L880857 27
L887040 27
1901 L1165200
1902 K1
1/3/02 K10267
1/23/02 K63233 15
5/5/02 K223821 28
5/16/02 K237214 27-4
6/17/02 K292096 27
K369206 15
10/1/02 K492494 27
10/6/02 K502037 15
1902 K594900
1903 K594901
K620649 27
1/2/03 K648414 27
1/12/03 K681154 15
3/6/03 K771362 27
3/16/03 27
3/20/03 K784517 31-20
4/20/03 K865438 27
6/18/03 K956465 K957559 28
6/20/03 27
7/20/03 K988893
8/19/03 K1078086 27
8/26/03 K1015301 29
1903 K1260800
1/2/04 B18853 23
1/2/04 B149490 27-4
3/18/04 B200619 27
3/25/04 B249820 15
4/13/04 B282244 27-4
4/14/04 B313165 27
5/14/04 B347262 27
5/23/04 B373473
9/26/04 127
B680936 15
10/31/04 B683590 15
11/28/04 B727899 27
2/6/05 B864401 27
3/27/05 B970450 27
8/4/05 B1271372
10/2/05 27
1905 B1544750
1906 H1
1/2/06 H76976 66
1/17/06 H130439 24
2/6/06 H136663 H178072 27
3/27/06 H228209 15
3/27/06 H241985 15
4/16/06 H327266 27
4/24/06 H370537 27
6/18/06 H465172 66
7/2/06 H575827 27
8/10/06 H586545 H605153 27-4
9/18/06 27
9/25/06 H732734 H736245 66
10/2/06 H798180 62
12/12/06 27
12/26/06 H984626 15-30 Singer says made in Canada
1906 H1006000
1907 H1006001
3/5/07 H1083780 H1136814 27
4/29/07 H1216408
5/1/07 H1285429 27
6/25/07 24
10/16/07 H1704295
1907 H1759650
1908 D1
1/1/08 D1375 D124881 27-4
3/18/08 D187439 15-30
12/8/08 27
12/18/08 D683387 D728232 27
12/18/08 D739940 66
1908 D753725
1909 D753726
2/13/09 D814054 27
3/17/09 D957735 66
5/20/09 D1006768 15
5/20/09 D1062767 27
8/18/09 D1289280 27
1909 D1448900
1910 G1
1/1/10 G36729 15
1/8/10 G56314 44
1/8/10 G147687 27
3/16/10 G264014 G350286 66(15)
6/10/10 15
6/15/10 G532173 G556975 27
6/22/10 G585348 66
7/1910 G563149 66
8/24/10 15
9/15/10 27
10/5/10 G770263 66
G736572 66
12/14/10 G876101* G876300* 17 200
12/14/10 G876301* G876500* 18 200
12/14/10 G876501* G877000* 23 500
12/30/10 G877001* G907000* 27 30,000 Made at St. Johns
12/30/10 G907001* G922000* 15 15,000 Made at St. Johns
12/30/10 G922001* G927000* 28 5,000 Made at St. Johns
1/15/11 G927001* G967000* 15 40,000
1/15/11 G967001* G1007000* 66 40,000
1/15/11 G1007001* G1047000* 27 10,000
1/15/11 G1047001* G1057000* 31 10,000
1/15/11 G1057001* G1059000* 18 2,000
1/15/11 G1059001* G1060000* 29 1,000
1/15/11 G1060001* G1062000* 24 2,000
1/15/11 G1062001* G1067000* 44 5,000
1/15/11 G1067001* G1068000* 71 1,000
1/15/11 G1068001* G1068500* 17 500
1/15/11 G1068501* G1068800* 62 300
1/15/11 G1068801* G1069100* 69 300
1/15/11 G1069101* G1069400* 81 300
1/24/11 G1069401* G1069500* 43 100
1/24/11 G1069501* G1070000* 32 500
1/24/11 G1070001* G1070400* 41 400
1/24/11 G1070401* G1070500* 55 100
1/24/11 G1070501* G1070600* 58 100
2/1/11 G1070601* G1070700* 17 100
2/14/11 G1070701* G1071700* 16 1,000
2/14/11 G1071701* G1072200* 17 500
2/16/11 G1072201* G1072400* 19 200
2/28/11 G1072401* G1072500* 7 100
3/3/11 G1072501* G1072600* 77-2 100
3/8/11 G1072601* G1072800* 7 200
3/8/11 G1072801* G1075800* 44 3,000
3/22/11 G1075801* G1078800* 24 3,000
3/22/11 G1078801* G1079300* 32 500
3/22/11 G1079301* G1079400* 76 100
3/29/11 G1079401* G1129400* 15 50,000
4/11/11 G1231659 66
5/23/11 G1272157 31-20
6/15/11 G1321151 15
10/11/11 66
11/15/11 G1611370 15
12/20/11 G1664206 27
1911 G1691650
1912 G1691651
4/10/12 66-1
7/17/12 G2237605 G2239560 66
G2342750 29-4
11/26/12 G2486803 127
12/18/12 66
1913 G2500001
1912 G2574400
1913 G2574401
1/6/13 G2576375 15
1/6/13 115
1/6/13 G2608897 G2688068 27/127
G2688068 127
3/15/13 G2746946 29
3/19/13 G2748992 66
6/21/13 G3007141 66
8/27/13 G3216442 66
8/27/13 G3228756
8/27/13 G3248235
1/22/14 G3423230 15 - Made in Canada
1913 G3423850
1914 G3423851
2/13/14 G3451882 15
3/18/14 G3502135 115
6/10/14 G3653258 66
12/29/14 G3850117 15
1914 G3903500
1915 G3903501
4/20/15 G4005970 66
4/21/15 G4043087 127
8/1/15 66
8/10/15 G4105203 G4117266 66
9/29/15 G4171166 127
12/14/15 115
12/29/15 G4372938 115
12/29/15 G4376498 G4391247 127
1915 G4398215
1916 G4398216
2/1/16 G4405729 G4409765 15
2/24/16 G4475941 G4486119 66
4/5/16 G4542966 95
G4697184 127
G4706973 127
7/25/16 G4795002 66
9/27/16 G4913138 66
1915 G5104460
1916 G5104461
1/8/17 G5120970 G5128730 127
1/8/17 G5135718 115
2/20/17 127
4/26/17 G5342520
4/26/17 G5353951 66
4/26/17 G5386987 115
5/17/17 G5425955 127
G5460506 95-10
6/21/17 G5465816 115
7/3/17 66
7/11/17 17
7/3/17 G5559466 66
7/20/17 G5589473 127
7/20/17 66
9/5/17 G5723113 66
10/27/17 G5783918 28
1917 G5862030
1918 G5862031
1/3/18 G5914223
1/3/18 G5995838 66
4/17/18 G6193313 28
5/17/18 28
6/25/18 G6289417 66
8/14/18 G6396498 127
9/17/18 66
10/9/18 G6476410
1918 G6582170
1919 G6582171
1/23/19 G6719200 128-13
2/19/19 G6736381 15
3/4/19 66
3/4/19 G6876663 127
3/25/19 G6909185 G6924671 128
5/23/19 G7072330 127
7/10/19 G7181301 G7183674 66
G7254432 128
8/5/19 G7272539 66
9/19/19 66
10/14/19 G7464773 128
10/29/19 G7514733
G7605584 66
12/24/19 G7634158 128
1919 G7687950
1920 G7687951
1/6/20 G7796707 127
G7864776 66-1
4/28/20 G8012504 G8025986 66
6/9/20 G8119173 128
8/5/20 G8199897 15
G8322061 66 G8322061 has bill of sale dated 11/6/20
8/25/20 G8345707 66
9/14/20 G8371930
11/3/20 G8473425 G8490679 66
1921 G8500001 101
1920 G8515550
1921 G8515551
G8554150 66
6/29/21 G8890125 66
8/1/21 G8904760 128
G8909023 128
24
1/2/21 G8584233 961
1/7/21 115
5/18/21 G8779407 127
9/6/21 G8934500 24
9/20/21 66
G9114838 66
12/19/21 101
12/19/21 G9124070 31
1921 G9126000
1922 G9126001
1/4/22 G9131486 15
1/18/22 G9227883
1/28/22 G9225275 128
1/31/22 G9224001
2/28/22 66
2/7/22 G9268556 66
3/20/22 G9296772 127
5/15/22 G9355572
5/16/22 G9337045 66
5/16/22 G9388852
5/22/22 G9416411 15
10/31/22 G9621316 G9656258 66
1922 G9726300
1923 G9726301
1/9/23 15
1/9/23 G9738094 G9763787 66
G9764981 66
3/13/23 G9914678 G9930729 66-1
5/1/23 G9978597 15
5/4/23 G9998542
5/22/23 G0028476
5/28/23 G0066825 66
6/26/23 27
6/27/23 99
8/27/23 129
G0316959 128
8/27/23 G0334068 66
9/5/23 G0349179 99
11/13/23 G0449936 G0478590 66
12/4/23 G0511045 128
12/4/23 G0514168
1923 G0556400
1924 G0556401
2/5/24 G0607173 66
3/19/24 G0750120 128
3/10/24 G0762695 128
3/19/24 G0766504
G0879357 31-20
1/17/24 G0890533 G0908361 128
4/8/24 G0923240 66
1924 G0999999