Serial Numbers

Name: Ebykr Classic Bicycle Serial Number Registry
Creator: Ebykr

A crowdsourced archive of classic lightweight frame numbers, logged by the people who own the machines. Look one up, compare yours against documented examples or add your own in under a minute — no account required.

Have a number to add?

Sixty seconds, no account needed. An editor reviews every entry, and your serial stays masked unless you say otherwise.

Log a serial number

Serials logged

and growing, one stamping at a time

Marques

from constructeurs to Keirin

Busiest decade

1960s

7 of the 23 machines

From build sheets

documented head to hub in Tech Specs

Serials by decade

1940s21950s41960s71970s61990s12000s1Undated2

Featured serial · A new stamping each week

A7 1671 — the number that anchored a build sheet

EnglandRoad1940sBuild sheet

Stamped on a 1947 Hobbs of Barbican Superbe, documented head to hub in the Tech Specs Database. The serial dated the frame, the frame anchored a full build sheet and the registry ties the two together.

See the registry record Open the build sheet

Serial	A7 1671
Year	1947 · documented

The Registry

All 23 logged serials, by maker — masked entries show only their first characters, at the owner’s request

Frame #3603

Log a Serial Number

Three short steps — only a serial number and a maker are required, and every entry is reviewed before it is published

The number

Letters, numbers and punctuation, exactly as they appear on the frame.

Serial number

Where is it stamped?

The machine

Maker and year are enough — more detail is welcome but optional.

Maker

Model (if known)

Year (or best estimate)

How sure is the year?

DocumentedBest estimate

Add more detail (optional)

Type

Country of origin

Condition

Colour / finish

Notes

Please do not enter another living person’s name without their permission — describe former owners generally, for example “a French collector”.

Photo links

A clear shot of the stamping helps an editor verify the entry — your own site, Flickr, Google Photos and the like.

You

Credit is public, your email stays private and the serial is masked unless you opt in.

How would you like to be credited?

The only name shown publicly — your real name and email are never published. Leave it as “private collection” if you prefer.

Your email (optional, private)

Only if you would like us to be able to follow up. It is never published.

Show my full serial publicly. Otherwise the registry displays only its first characters — 25••• — and keeps the rest private.

I confirm these details are accurate to the best of my knowledge, any photographs are mine to share, and I have removed or have permission to include any other person named here. I understand Ebykr will publish the maker, model, year, serial number, type, country and condition of this bicycle in the public registry, credited only to the handle I choose. My name, email and IP address stay private. I may ask Ebykr to correct or remove my entry at any time.

Your IP address is recorded privately for moderation. You do not need an account to log a serial.

Reviewed by an editor before it appears — usually within a day.

Serial Numbers

A7 1671 — the number that anchored a build sheet

The Registry

1950 A. Maury Randonneur

1955 Bianchi Campione del Mondo

Cavalieri Cambio Corsa

1963 Cinelli Super Corsa

2003 Colnago Dream Track

1972 Gitane Record du Monde de l'Heure

c. 1948 Hetchins SuperSpecial

1947 Hobbs of Barbican Superbe

1956 Holdsworth Triallist

1971 Holdsworth Professional

1965 Jo Routens Cyclosportif

1967 Jo Routens Cyclosportif

1967 Jo Routens Randonneur

1970 Jo Routens Randonneur

1951 Legnano Tipo Roma

1964 Legnano Pista (Tipo Roma)

1979 Raleigh Professional Track

1964 Schwinn Paramount

1968 Schwinn Paramount

1975 Schwinn Paramount P-14

Twin Top Tube Randonneuse

c. 1975 Wilier-Triestina Pista

1993 Yamaguchi Track

Log a Serial Number

The number

The machine

You