As far as I know the first two digits are the year. At least that's the case for my 66 Atala track bike.
Ottawa, Ontario, Canada
> -----Original Message-----
> From: email@example.com
> [mailto:firstname.lastname@example.org] On Behalf Of
> Michael Davies
> Sent: Tuesday, October 04, 2005 11:04 AM
> To: email@example.com; firstname.lastname@example.org
> Subject: [CR]Dating an Atala (was: Italian frame # 72A1485)
> Thanks John...yes it appears to be an Atala...the
> lugwork appears identical to Aldo Ross's Atala on the
> CR website. Does anyone know how to date an Atala from
> either the style or serial number?
> thanks - michael davies
> St Louis, MO
> > My old Atala has a 26.2 seat tube (not Columbus,
> > though) and the serial
> > number 72H7657 stamped vertically on the right side
> > of the seat tube.
> > --
> > John (email@example.com)
> > Appleton WI USA