Schwinn Serial Number Reference


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Dave Stromberger

I'm Afraid I Can't Let You Do That
Staff member
System Administrator
May 20, 2006
1,822
2,413
49
Cheney, WA
#2
If someone wants to add information for serial number prior to 1948, please post that here.

Please don't reply with discussion beyond that.. I want to keep this thread strictly related to serial number i.d..

Thanks,
DS
 
Likes: barnyguey

Obi-Wan Schwinnobi

Riding a '38 Autocycle Deluxe
Feb 5, 2013
6,591
1,668
39
San Diego
#3
1946 series Hxxxxx Ixxxxx Jxxxxx A0xxxx (small type face) Bxxxxx
Cxxxxx (low number)

Cxxxxx is probably a cusp number between 46 and 47. More on the 47 side.



1947 series Cxxxxx/Dxxxxx

1948 series Dxxxxx ect...

Identifying features:

Skinny drop outs (1946)
Razor edge fenders
Shortie rear fender(early 1946 rare)
light cover has deep rear screw hole
Raised or de bossed style AS clamp(rare)
Non scripted light lens
Tapered pencil kick stand
Canti frames have more of a hump to the top tube. (Early)
Straight bars ie "fat bars" have same dia bottom tubing. (This feature also was found on later years and is not solely indicative of a 1946)
Rack clamp is a one piece flat band aid shaped plate.
Rear top stay fender bracket is sometimes tubular on early frames. (I've only seen this on dx models). My 46 rear fender stay mount is taller and more boxy then late 40s 50s style.
Early 46 tanks have been seen with tapped brackets ie left over snap style prewar tanks.
Big outtie delta horn button and tank hole (prewar size).
Chain guard front frame mount tab is thinner with bigger hole.
Grips will be oval with one tail coming off N without double back crossover(late prewar style)
Rear chevron will be shorter on 46.
Drop center rims or sometimes Lobdell flat profile rims.
1946 bikes have been found with 1941 stamped dogleg cranks
skinny truss rods.
Springer pivot bolt rumored to be chrome on early 46?
Pivot clip was prewar style half clip.(early)
Springer fenders sported diamond and tombstone reinforcement tabs
Granted stuff got replaced or got carried over ie pencil stand.
Note; (A) serial started again in 51 but in regular larger print.
What I have gathered doing research and asking experts is that the I J and K serials would have been left over prewar BB shells and or frames that had already been stamped prior. A being the first true postwar serial. Hope this helps. Pm me if you have any further questions or would like to add something to the list. Thank you
 
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GTs58

Riding a '38 Autocycle Deluxe
Sep 2, 2012
8,486
6,081
Central Arizona
#6
are tandems also on the list?
Yes and no. The first year that I see any recordings for the Tandem is 1949...... 01/19 ------------------ T001000 ----- T001217 -(TDM)
The Tandem's SN always started with the T00 during the years the T&C was available and the number was stamped on the rear bottom bracket. I believe after the T&C was discontinued the numbers went to the standard SN recordings and were then stamped on the left rear dropout, and this was sometime in the early 60's. The last entry for the Tandems that I can see was 07/24/1950 ------------------ T002663 ----- T003035 -(TDM)
 

Metacortex

Wore out three sets of tires already!
Sep 22, 2012
851
481
The Matrix
#8
I believe the original source for the Schwinn serial number information listed in the OP is here:

Schwinn Date Codes

From there it links to these pages:

i.d. FACTS
1948 through 1952
1952 through 1969
1970 through 1982

Note on the original pages where it states "Copy and print this info at will, it`s FREE.
BUT If You Steal The HTML And Post It On A Web Page In ANY Format, It Is Illegal"

In that case it appears that the info in the OP's links was reposted without authorization or credit.

I would only trust the information from the original source, as copies (especially unauthorized ones) can introduce errors. For example the ORIGINAL 1970 through 1982 page it states: "NUMBERS ARE NOW LOCATED ON THE LOWER LEFT OF THE HEADTUBE (By The Schwinn Badge On The Front OF The Frame)", whereas on the COPIED 1970 through 1982 page it states "Serial #'s are now on the lower left of the headtube, by the Schinn badge on fromt of the frame". :(
 

scooter_trasher

Finally riding a big boys bike
Nov 12, 2015
445
117
#11
[I would only trust the information from the original source, as copies (especially unauthorized ones) can introduce errors. For example the ORIGINAL 1970 through 1982 page it states: "NUMBERS ARE NOW LOCATED ON THE LOWER LEFT OF THE HEADTUBE (By The Schwinn Badge On The Front OF The Frame)", whereas on the COPIED 1970 through 1982 page it states "Serial #'s are now on the lower left of the headtube, by the Schinn badge on fromt of the frame". :(
Or in the case of my 75 Typhoon where everyone is wrong, it is stamped upside down and backwards at the top of the headtube, must have been hung on the line wrong and stamped as hung, because no one stops a production line and keeps their job, unless maybe it's ripping someones arm off.
 

GTs58

Riding a '38 Autocycle Deluxe
Sep 2, 2012
8,486
6,081
Central Arizona
#12
Or in the case of my 75 Typhoon where everyone is wrong, it is stamped upside down at the top of the headtube, must have been hung on the line wrong and stamped as hung, because no one stops a production line and keeps their job, unless maybe it's ripping someones arm off.
Schwinn head tubes were fabricated from a flat piece of stock when the fillet brazed frames were no longer and EF came into play. That piece of flat steel for the head tube went thru many stampings, then rolled and then welded together. Here's the deal on the upside down SN. The serial numbers were stamped by an automatic stamping machine and the head tube plate was stamped with a serial number prior to any rolling or welding. Some worker had the head tube plate upside down when he stamped the SN. I've seen a few of these along with a double stamping of the SN. One on the left top upside down and then a different SN stamping on the right bottom in the correct spot. Schwinn quit stamping the SN's when the frame was built when they quit stamping the numbers by hand. All auto stamped SN's were stamped on the component prior to any welding, building of the frame etc.
 
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troywest

On Training Wheels
Jan 6, 2016
3
0
#13
I need some help on a serial number. The bike has a head badge that says Shwinn Chicago. It is a Cruiser 5. The serial number is BV 10052. I can not locate BV serial numbers and for all purposes the lists stop at 1982. If it was past 1982, I thought Chicago was out of business. Any help or direction would be great.
 

GTs58

Riding a '38 Autocycle Deluxe
Sep 2, 2012
8,486
6,081
Central Arizona
#14
I need some help on a serial number. The bike has a head badge that says Shwinn Chicago. It is a Cruiser 5. The serial number is BV 10052. I can not locate BV serial numbers and for all purposes the lists stop at 1982. If it was past 1982, I thought Chicago was out of business. Any help or direction would be great.
Check the headbadge stamping next to the I for the Julian date, which was when the bike was built. BV serial indicates the serial number was stamped February 1984. More than likely a Murray built Schwinn.
 
Likes: Tdiaz91ca

1973rx3

Finally riding a big boys bike
Dec 4, 2011
303
49
#15
Hello Dave a prewar Schwinn Cycle truck with serial number I38618, when do you believe it was built? Thanks for your help
 

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