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International Sewing Machine Collectors' Society

The purpose of the International Sewing Machine Collectors' Society is to foster the collecting of, and research into, sewing machines.

Singer Sewing Machine Serial Number Database

Serial Numbers Beginning with: R
Letter Register Numbers
From - To		 Machine Class
(Model No.)		 Quantity Allotted Date Allotted Year Allotted Notes
R- 1 69 2K 3K 69 January / June 1902
R- 70 119 5K 6K 8K 9K 50 January / June 1902
R- 120 139 14K 20 January / June 1902
R- 140 102139 15k 102000 January / June 1902
R- 102140 105139 15K 3000 January / June 1902 R
R- 105140 148139 16K 43000 January / June 1902
R- 148140 150639 16K 2500 January / June 1902 R
R- 150640 195639 27K 45000 January / June 1902
R- 195640 198639 27K 3000 January / June 1902 R
R- 198640 318639 28K 120000 January / June 1902
R- 318640 321639 28K 3000 January / June 1902 R
R- 321640 328639 29K 7000 January / June 1902
R- 328640 329039 29K 400 January / June 1902 R
R- 329040 330039 29K31 1000 January / June 1902
R- 330040 330089 29K31 50 January / June 1902 R
R- 330090 335089 31K 5000 January / June 1902
R- 335090 335189 31K 100 January / June 1902 R
R- 335190 335989 33K 800 January / June 1902
R- 335990 336139 33K 150 January / June 1902 R
R- 336140 337639 34K 1500 January / June 1902
R- 337640 337689 34K 50 January / June 1902 R
R- 337690 339189 45K 1500 January / June 1902
R- 339190 339339 45K 150 January / June 1902 R
R- 339340 339439 46K1 & 2 100 January / June 1902
R- 339440 339459 46K1 & 2 20 January / June 1902 R
R- 339460 339584 46K13 & 14 125 January / June 1902
R- 339585 339604 46K13 & 14 20 January / June 1902 R
R- 339605 340104 6K 22 23 24 500 January / June 1902
R- 340105 340179 6K 22 23 24 75 January / June 1902 R
R- 340180 340279 47K 100 January / June 1902
R- 340280 340299 47K 20 January / June 1902 R
R- 340300 340424 15K 125 January / June 1902
R- 340425 340449 15K 25 January / June 1902 R
R- 340450 340574 16K 125 January / June 1902
R- 340575 340599 16K 25 January / June 1902 R
R- 340600 340699 23 100 January / June 1902
R- 340700 340724 23 25 January / June 1902 R
R- 340725 360224 48K 19500 January / June 1902
R- 360225 360724 48K 500 January / June 1902 R
R- 360725 360824 KILTERS 100 January / June 1902
R- 360825 360844 KILTERS 20 January / June 1902 R
R- 360845 360924 22K 80 January / June 1902
R- 360925 360944 22K 20 January / June 1902 R
R- 360945 361044 44K 100 January / June 1902
R- 361045 361094 44K 50 January / June 1902 R
R- 361095 361194 KILTERS 100 January / June 1902
R- 361195 364194 31K 3000 January / June 1902
R- 364195 364204 49KSV1 10 January / June 1902
R- 364205 364224 14K 20 July/December 1902
R- 364225 454224 15K 90000 July/December 1902
R- 454225 456724 15K 2500 July/December 1902 R
R- 456725 456874 15K 150 July/December 1902 C.S.
R- 456875 496874 16K 40000 July/December 1902
R- 496875 499374 16K 2500 July/December 1902 R
R- 499375 499524 16K 150 July/December 1902 C.S.
R- 499525 539524 27K 40000 July/December 1902
R- 539525 540024 27K 500 July/December 1902 R
R- 540025 660024 28K 120000 July/December 1902
R- 660025 666024 29K 6000 July/December 1902
R- 666025 666124 29K 100 July/December 1902 R
R- 666125 667124 29K31 1000 July/December 1902
R- 667125 675124 31K 8000 July/December 1902
R- 675125 675174 31K 50 July/December 1902 R
R- 675175 676174 33K 1000 July/December 1902
R- 676175 677174 34K 1000 July/December 1902
R- 677175 677224 44K 50 July/December 1902 R
R- 677225 678224 45K 1000 July/December 1902
R- 678225 678274 45K 50 July/December 1902 R
R- 678275 678374 6K 13 & 14 100 July/December 1902
R- 678375 678874 6K 22 & 24 500 July/December 1902
R- 678875 698874 48K 20000 July/December 1902
R- 698875 699024 KILTERS 150 July/December 1902
R- 699025 704024 44K 5000 July/December 1902
R- 704025 704124 46K 13 & 14 100 July/December 1902
R- 704125 704224 12K 100 July/December 1902 R
R- 704225 704324 KILTERS 100 July/December 1902
R- 704325 704374 23 50 July/December 1902 R CLOTH
R- 704375 704424 44K 50 July/December 1902 R
R- 704425 710424 29K 6000 January / June 1903
R- 710425 711424 29K31 1000 January / June 1903
R- 711425 711724 29K 300 January / June 1903 R
R- 711725 851724 28K 140000 January / June 1903
R- 851725 853824 28K 2100 January / June 1903 R
R- 853825 859824 31K 6000 January / June 1903
R- 859825 859924 31K 100 January / June 1903 R
R- 859925 860424 33K 500 January / June 1903
R- 860425 860484 33K 60 January / June 1903 R
R- 860485 861484 34K 1000 January / June 1903
R- 861485 861504 34K 20 January / June 1903 R
R- 861505 864504 44K 3000 January / June 1903
R- 864505 864604 44K 100 January / June 1903 R
R- 864605 864654 45K 50 January / June 1903 R
R- 864655 865154 45K25 500 January / June 1903
R- 865155 865204 45K25 50 January / June 1903 R
R- 865205 865304 46K13 100 January / June 1903
R- 865305 865354 46K13 50 January / June 1903 R
R- 865355 865374 47K 20 January / June 1903
R- 865375 865384 47K 10 January / June 1903 R
R- 865385 890384 48K 25000 January / June 1903
R- 890385 890404 23 20 January / June 1903 CLOTH
R- 890405 890429 KILTERS 25 January / June 1903
R- 890430 890449 14K 20 January / June 1903
R- 890450 970449 15K 80000 January / June 1903
R- 970450 972949 15K 2500 January / June 1903 R
R- 972950 973049 15K 100 January / June 1903 C.S.
R- 973050 973069 15K 20 January / June 1903 R
R- 973070 995069 16K 22000 January / June 1903
R- 995070 997069 16K 2000 January / June 1903 R
R- 997070 997089 16K 20 January / June 1903 C.S. R
R- 997090 1019089 27K 22000 January / June 1903
R- 1019090 1020189 27K 1100 January / June 1903 R
R- 1020190 1020389 KILTERS 200 January / June 1903
R- 1020390 1020439 KILTERS 50 January / June 1903 R
R- 1020440 1029439 29K 9000 July/December 1903
R- 1029440 1031439 29K31 2000 July/December 1903
R- 1031440 1031539 29K 100 July/December 1903 R
R- 1031540 1156539 15K 125000 July/December 1903
R- 1156540 1181539 16K 25000 July/December 1903
R- 1181540 1181839 16K 300 July/December 1903 R
R- 1181840 1181849 14K 10 July/December 1903
R- 1181850 1211849 27K 30000 July/December 1903
R- 1211850 1336849 28K 125000 July/December 1903
R- 1336850 1337349 28K 500 July/December 1903 R
R- 1337350 1337374 31K 25 July/December 1903 R
R- 1337375 1337399 33K 25 July/December 1903 R
R- 1337400 1337899 34K 500 July/December 1903
R- 1337900 1337949 44K 50 July/December 1903 R
R- 1337950 1338949 45K 1000 July/December 1903
R- 1338950 1338974 45K 25 July/December 1903 R
R- 1338975 1339474 46K25 500 July/December 1903
R- 1339475 1339499 46K25 25 July/December 1903 R
R- 1339500 1339599 46K13 100 July/December 1903
R- 1339600 1339614 46K13 15 July/December 1903
R- 1339615 1374614 48K 35000 July/December 1903
R- 1374615 1374714 KILTERS 100 July/December 1903
R- 1374715 1379714 31K 5000 July/December 1903
R- 1379715 1379724 23 10 July/December 1903 LEATHER
R- 1379725 1380024 34K 300 July/December 1903
R- 1380025 1383024 15K 3000 July/December 1903
R- 1383025 1384024 16K 1000 July/December 1903
R- 1384025 1385524 27K 1500 July/December 1903
R- 1385525 1388024 48K 2500 July/December 1903

ISMACS is an organization totally independent of all sewing-machine manufacturers, past or present and is not affiliated with any of the companies mentioned in these pages.  Please Note: Do not contact any ISMACS official in an attempt to solicit a valuation - it is not possible other than by hands-on assessment and your request will be ignored.

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