Strangely, it included all "NA" and "NB" serial numbers regardless of model number.
From April 1996 to 2005 Singer Customer Service used the Sewing Machine Blue Book dates of 1953-1959 for all "NA" and "NB" serial numbers.
What happened to the years 1952, 1953, 1955, 1957, 1958, 1959, 1960, 19.
Singer along with the Berlin-based agency "Culture Management Berlin" created a database of Singer sewing machine world productions in 2000 and 5 years later the list was finally finished and published in 2005.
NA-1951 With the help of so many owners of the Singer 301/301A I was able to come up with a very accurate "Year of Issue" by making a "Database of Serial Numbers" that I collected over the years.
I also used specific events, assorted reference materials, original owner purchase receipts and instruction manual revised dates.
(Ryobi Corporation) This was several years after the Elizabethport factory located in Elizabeth, New Jersey closed down on 1 December 1982. The myth about the "A" added because the Anderson factory burned down, is simply not true!What owners did not understand was that it was only the allotted date and not the date their sewing machine was made.It could take as much as 2 to 3 months and sometimes longer before the allotted quantity was actual made.When it comes to Anderson, South Carolina Singer only lists 3 Years of Issue for all NA, NB and NC serial numbers that include Models 301, 301A, 401A, 403A, 500A and 503A.These years are not completely accurate and are only the years of the entire allotted serial numbers; NA-1951, NB-1956 and NC-1961.