Alex has spent a lifetime in the sewing industry and is considered one of the foremost experts of pioneering machines and their inventors. He has written extensively for trade magazines, radio, television, books and publications world wide. You may have seen him on The Great British Sewing Bee or How The Victorians Built Britain.
- Serial Numbers Manufacture Date
- Colt 1911 Serial Numbers Manufacture Date
- Savage Arms Serial Numbers Manufacture Date
The simple guide to dating your early Singer sewing machines.
(Where your Singer has two serial numbers always choose the larger of the two to date your machine)
How to Read Hayward Serial Numbers and Date Codes. The product ID tag and serial number can tell you the month and year it was manufactured, and for the Aquarite/Goldline SWCG cells the length of the warranty. The format has changed a bit through the years and below are the different formats Hayward has used. Enter your Ruger® serial number above to view its model number, product line, caliber, production status, ship date and instruction manual. Note: This service is provided as reference only, and accuracy is not guaranteed. For specific questions or additional information, please contact Customer Service. The serial number is usually 2 letters, followed by 6 numbers: 0J123987 The first digit of the serial number is the last digit of the year of manufacture, the second digit of the serial number will be a letter, the letters spot in the alphabet – 2 equals month Then.
Singer machine serial number dating Guide
(Brace yourself it's tricky!)
Please note this is only a guide, not gospel! Some people mail me to say they have a receipt from 1950 so how could my guide have their machine as made in 1948 or 1949? Let me explain. The production runs at factories like Kilbowie were complex and long. The castings were marked with the serial number during manufacture. The machines were miles from completion, packing and delivery. Then there is delivery to the depot, storage, sales to the shop, and eventually sales to the customer.These factors all effect the purchase/receipt date, but not the date of manufacture.
For example during WW2 it is a well know fact the Singers were making guns and bullets as well as sewing machines. Only when they could spare the time would they continue with sewing machine production. I have come across a woman who bought her machine brand new in 1946 yet the casting was clearly made in 1939 just before the outbreak of WWII. During World War Two Singer had back orders for over three millions machines!
Now to the dating
All Singers up until 1900 have no letter prefix and came from several factories around the world. The company cleverly managed their production from all factories to coincide with the serial number flow. If you fancy a read on the collapse of Singer in Britain have a go at End of Empire.
Why two serial numbers?
Very early Singers from the 1850's up until the start of prefix letters in 1900 had two serial numbers. There is a lot of controversy over why there were two lots of numbers. The most likely answer is that the larger number was the total number of machines produced by Singers when they only had a few factories and could keep up with, and control, the production output from Britain and America. They would order machines in batches say, 1,000 or 10,000 from Kilbowie, Elizabethport and elsewhere. The lower number may be the total production/batch run of that particular model range, the larger the overall total number of Singer machines made.
Singers have never manage to shed light on these two numbers!
Serial Numbers Manufacture Date
Note: when two serial numbers are on the machine use the larger of the serial numbers.
Anyway here goes nothing. I do hope you find it useful.
Note:
On pre-1900 Singer machines if there are two serial numbers, always use the higher, longer, larger, serial number of the two to date your machine.
The product ID tag and serial number can tell you the month and year it was manufactured, and for the Aquarite/Goldline SWCG cells the length of the warranty. The format has changed a bit through the years and below are the different formats Hayward has used.
Pumps, Filters, Cleaners, Heaters, Heat Pumps, some Incandescent Lighting and Accessories
Hayward's serial numbers for all products, with the exception of some cleaners, controls, heat pumps and electronic chlorinators, are 17 digits long and begin with the numbers '21'. Often these numbers appear on product labels with spaces or parentheses.[1]
Model number is found on the dataplate located on the bottom right of the electrical cover on Hayward Heat Pro units.[2]
On Summit style Heat Pumps the data plate is located on the left side of the base pan
Controls, Electronic Chlorination, ColorLogic Lighting
Colt 1911 Serial Numbers Manufacture Date
Serial numbers for Controls, Electronic Chlorination, and ColorLogic Lighting typically follow a format like this: 1M12345-1234567 (all numbers with the exception of the letter in the second position).
For products such as Aqua Rite, the serial number can be found inside the door of the control
Heat Pumps, Heaters, Filters, Pumps August 2015 - Present
Format is 2112-1911-003216017.[3] In this example, manufacturing date is November 2019.
Savage Arms Serial Numbers Manufacture Date
- The first two numbers (21)are common to all ID tags
- The 3rd - 4th number is the plant of manufacture
- 10 = Canada
- 11 = Pomona, CA
- 12 = Clemmons, NC
- 13 = Nashville, TN
- The 5th % 6th number will be the year & the 7th & 8th is the month
- 1911 = November 2019
- 1912 = December 2019
Heat Pumps, Heaters, Filters, Pumps March 2010 - July 2015
Format is (21) 12-1004-000002006.[4] In this example, manufacturing date is March of 2010.
- The first two numbers (21)are common to all ID tags
- The 3rd - 4th number is the plant of manufacture
- 10 = Canada
- 11 = Pomona, CA
- 12 = Clemmons, NC
- 13 = Nashville, TN
- The 5th & 6th number will be the year & the 7th & 8th is the month
- 1003 = March 2010
- 1006 = June 2010
Heat Pumps, Heaters, Filters, Pumps February 2004 - February 2010
Format is (21) 120-402-000002006
- The first two numbers (21) are common to all ID tags
- The 3rd - 5th number is the plant of manufacture
- 100 = Canada
- 110 = Pomona, CA
- 120 = Clemmons, NC
- 130 = Nashville, TN
- The 6th -8th number will be the year & month Example:
- 402 = 2004, Feb
- 405 = 2004, May
- 501 = 2005, Jan
- 502 = 2005, Feb
Reading Goldline Serial Numbers August 2011 - Present
Beginning 08-05-2011 the serial number format is 4A20021-104377.[5]
- First Digit = Standard Warranty length
- 4 = 4 Year Warranty
- 3 = 3 Year Warranty
- 1 = 1 Year Warranty
- Second Character = Product Family
- A = Aquarite
- R = remote
- Third & Fourth Digit indicate the year the product was made
- 20 = 2020
- Fifth - seventh digit = day of year manufactured
- 021 = 21st day of 2020
- Digits 8 and on = 123456 = Manufacturing ID
Reading Goldline Serial Numbers November 2001 – July 2011
Beginning 11-01-01 the serial number format is 1R0509-1020020.
- First Digit
- 3 Year Warranty
- 1 = 1 Year Warranty
- Second Character = Product Family
- A = Aquarite
- R = remote
- Third & Fourth Digit indicate the year the product was made
- 05 = 2005
- Fifth & Sixth Digit indicate months of manufacture
- 09= September
- Digits 7 and on = 123456 = Manufacturing ID
.
- ↑https://www.haywardnet.com/warranty/hint.cfm?lang=en&prodID=359
- ↑http://www.haywardnet.com/pdfs/Heatpump-Troubleshooting-Guide.pdf
- ↑https://www.totallyhayward.com/techservices/attachments/Technical%20Updates%20for%20Pool%20Professionals%20Jan%20%202020.pdf
- ↑https://www.totallyhayward.com/techservices/attachments/Serial%20Number%20Read%20REVISED%201-2012.pdf
- ↑https://www.totallyhayward.com/techservices/attachments/How%20to%20read%20Goldline%20Serial%20Numbers.pdf
