Sewing Machine Research
ISMACS International
International Sewing Machine Collectors' Society

Singer Sewing Machine Serial Number Database

Serial Numbers Beginning with: AP

Letter Register Numbers
From - To
Machine Class
(Model No.)
Quantity Allotted Date Allotted Year Allotted Notes
AP- 000001 150000 600 150000 October 26 1964
AP- 150001 250000 603 100000 October 26 1964
AP- 250001 295000 604 45000 October 26 1964
AP- 295001 295001 554-504 1 November 10 1964
AP- 295002 295002 555-101 1 November 10 1964
AP- 295003 295003 555-601 1 November 10 1964
AP- 295004 295028 256-5 25 November 10 1964
AP- 295029 300028 251 5000 December 10 1964
AP- 300029 301028 269 1000 January 6 1965
AP- 301029 301228 7 200 January 12 1965
AP- 301229 301728 300 500 January 21 1965
AP- 301729 303728 262 2000 January 27 1965
AP- 303729 304728 261 1000 February 1 1965
AP- 304729 305728 17 1000 February 16 1965
AP- 305729 305753 256 25 February 17 1965
AP- 305754 305754 552-105 1 March 9 1965 PROTOTYPE
AP- 305755 305755 552-203 1 March 9 1965 PROTOTYPE
AP- 305756 305756 554-121 1 March 9 1965 PROTOTYPE
AP- 305757 305757 554-301 1 March 9 1965 PROTOTYPE
AP- 305758 305758 554-504 1 March 9 1965 PROTOTYPE
AP- 305759 305759 554-504 1 March 9 1965 PROTOTYPE
AP- 305760 305760 554-601 1 March 9 1965 PROTOTYPE
AP- 305761 305761 554-606 1 March 9 1965 PROTOTYPE
AP- 305762 305762 555-201 1 March 9 1965 PROTOTYPE
AP- 305763 305763 555-601 1 March 9 1965 PROTOTYPE
AP- 305764 305764 555-601 1 March 9 1965 PROTOTYPE
AP- 305765 310764 281 5000 March 22 1965
AP- 310765 311264 82 500 April 2 1965
AP- 311265 312264 300 1000 April 9 1965
AP- 312265 313264 269 1000 April20 1965
AP- 313265 313764 175 500 April20 1965
AP- 313765 314764 114 1000 April 21 1965
AP- 314765 319764 281 5000 May 4 1965
AP- 319765 320264 147 500 May 21 1965
AP- 320265 320265 552-141 1 June 10 1965 PROTOTYPE
AP- 320266 320266 554-121 1 June 10 1965 PROTOTYPE
AP- 320267 320291 256 25 June 16 1965
AP- 320292 325291 281 5000 June 29 1965
AP- 325292 326291 269 1000 June 30 1965
AP- 326292 331291 281 5000 August 27 1965
AP- 331292 346291 604 15000 August 27 1965 see notation in book
AP- 346292 346791 18 500 September 3 1965
AP- 346792 347291 175 500 September 3 1965
AP- 347292 352291 604 5000 September 30 1965
AP- 352292 392291 600 40000 September 30 1965
AP- 392292 392491 7 200 October 13 1965
AP- 392492 392791 159 300 October 13 1965
AP- 392792 393291 281 500 October 15 1965
AP- 393292 393316 256 25 October 18 1965
AP- 393317 394316 300 1000 November 3 1965
AP- 394317 399316 281 5000 November 5 1965
AP- 399317 400386 269 1070 November 10 1965
AP- 400387 405316 552 4930 December 6 1965
AP- 405317 410316 554 5000 December 6 1965
AP- 410317 415316 555 5000 December 6 1965
AP- 415317 415616 7 300 December 6 1965
AP- 415617 420616 281 5000 December 6 1965
AP- 420617 421616 300W 1000 January 24 1966
AP- 421617 487616 600 66000 January 27 1966
AP- 487617 529616 603 42000 January 27 1966
AP- 529617 549616 604 20000 January 27 1966
AP- 549617 550616 269 1000 January 31 1966
AP- 550617 555616 281 5000 February 2 1966
AP- 555617 560616 281 5000 March 22 1966
AP- 560617 560641 256 25 March 24 1966
AP- 560642 561141 175 500 March 29 1966
AP- 561142 563141 269 2000 March 30 1966
AP- 563142 564000 not assigned 859 1966
AP- 564001 624000 620 60000 April 21 1966
AP- 624001 654000 625 30000 April 21 1966
AP- 654001 704000 628 50000 April 21 1966
AP- 704001 718000 629 14000 April 21 1966
AP- 718001 754000 626 36000 April 21 1966
AP- 754001 755000 460 1000 April 26 1966
AP- 755001 755001 555-602 1 May 16 1966
AP- 755002 760001 281 5000 May 19 1966
AP- 760002 761001 114 1000 May 24 1966
AP- 761002 761251 146 250 May 24 1966
AP- 761252 761252 552-203 1 June 14 1966
AP- 761253 761752 7 500 July 13 1966
AP- 761753 761753 552-601 1 July 13 1966
AP- 761754 763753 269 2000 August 1 1966
AP- 763754 764253 302 500 August 4 1966
AP- 764254 764278 256 25 August 8 1966
AP- 764279 769278 281 5000 August 12 1966
AP- 769279 769778 144W 500 September 1 1966
AP- 769779 770778 300W 1000 September 28 1966
AP- 770779 771278 175 500 October 6 1966
AP- 771279 776278 281 5000 October 10 1966
AP- 776279 781278 269 5000 November 11 1966
AP- 781279 781300 not assigned 22 1966
AP- 781301 811300 620 30000 November 17 1966
AP- 811301 821300 625 10000 November 17 1966
AP- 821301 833000 not assigned 11700 1966
AP- 833001 871300 626 38300 November 17 1966
AP- 871301 886300 609 15000 November 17 1966
AP- 886301 911300 625 25000 November 17 1966
AP- 911301 999999 not assigned 88699 1966