Schwinn Serial Numbers and Date Codes

Dating gt bikes

Especially useful and

Request for Information This component dating discussion is a work in progress. As the wear on a vintage bike increases, the greater the likelihood components are not original, either through replacement of worn parts or through component swaps. The bottom bracket where serial numbers are typically located is circled.

Most bicycles have their serial number

Especially useful, and challenging to sort out and verify, was the Shimano code. Of course, all this assumes the bike has the original component. Naturally, for information provided by others, such as for the Campagnolo and Williams codes, the original source should be cited. The number will have a production month letter in either the first or second position and a production year number in the other first or second position.

Huret Derailleurs Huret front and rear derailleurs often have a four-digit date code. Maillard Hubs and Pedals Maillard used an open dating system for their hubs and pedals. It might be a really cool thing if I can track down Gilbert now and interview him for you. The two sets of Dia-Compe brake lever bodies I checked had the four-number date code stamped inside the lever body I couldn't find any markings on the levers themselves. Okay, fine, so maybe there are a few bikes without serial numbers, but this is rare and typical only on hand made bikes or really old bicycles.

So, I looked around and I found that there was an old post on Vintage, that is identical to what they have on the museum - word for word. Weinmann and Dia-Compe calipers usually have codes on the back of a caliper arm.

The last two digits indicate the year. The first four numbers should be a two digit month followed by a two digit year.

If the frame was made overseas in Taiwan, it gets more complicated. Many components are marked with size descriptors in addition to component manufacturer's date codes. New components often were used. Locating the Serial Number - Chicago built Schwinn serial numbers are found on the left rear axle-hanger or fork-end on the frame. At least it would be the earliest date that the bike could have been made.

The components were added by

The components were added by the local bike shop or by the buyer. Most bicycles have their serial number engraved beneath their bottom bracket, but sometimes serial numbers are found in other places.

Nitto We are trying to sort out the manufacturer's date code on Nitto handlebars and stems. Their work must not be stolen. The first two digits are the week of the year. However, a Gran Compe set of calipers had no markings. The model and year of production was also coded by a letter, so you won't be able to spot a two digit month and two digit year.

This was used to connect the remainder of a production run that spilled over into January of the next year. The next part of the serial number is eight numeric digits.

Schwinn Serial Numbers and Date Codes

Of course all this