Hey Wyndham,
I was watching that E-B Favori, but decided the shipping to the States would likely be prohibitive. As to your question, sending a note to E-B will most assuredly give you a specific date - that's what I did. For reference, my three E-Bs are:
5789 - San Remo Super built 15/11/82
5245 - San Remo Super built 12/1/76
5093 - San Remo built 19/11/74
Although mine are E-Bs, not Favori, I'd bet that the serial numbers were shared between the two lines and that your 5720 places it squarely in 1982.
...Derek Davis, Phoenix
> -----Original Message-----
> From: Simon PJ [mailto:simonpj@mac.com]
> Sent: Saturday, January 13, 2007 10:17 AM
> To: classicrendezvous@bikelist.org
> Subject: [CR]Photos: dating Ellis-Briggs SpeedStream bike?
>
> I have posted some quickly taken photos of a recently acquired Ellis-
> Briggs
> 'Favori' brand bike built in 531 SpeedStream:
>
> http://www.wooljersey.com/
>
> The person that sold me the bike (the original owner) dated the frame
at
> 1976, but that sounds early for an aero tubed bike. The Super Record
rear
> mech is from 1977 but could easily pre-date the frame.
>
> You'll see that the frame is currently wearing an eclectic mix of
parts.
> I'd
> like to fit it out with period correct parts reflecting the aero
intention
> of the frame - so would like to establish whether it really does date
back
> to 1976 or it's in fact from the early eighties. Which, for example,
would
> help decide whether Shimano AX parts would be appropriate.
>
> Do you know of any online sources about this early aero era?
>
> Thanks,
>
> Wyndham Pulman-Jones
> Girton, Cambs., UK.