I have a Mercier 300 (early seventies?) that has "EDA" (in an oval) stamped on the top of the bottom bracket shell, just behind the chainrings. A search of the bikelist.org archives indicates that this has come up before. This has been commented on as occurring on the following bikes:
An unknown French frame, a Jacques Anquetil, a Raleigh Int'l, and a Raleigh Pro.
Also, on the CR Site, I spotted the logo on the underside of the bottom bracket shell on a fifties Louison Bobet (which has the same headbadge sillhouette as Mercier). This EDA logo is slightly different from the one on my Mercier:
http://www.classicrendezvous.com/
I am also curious as to what this stands for.
Ed Arends (Long Beach, California - but usually in Hudson, Wisconsin)
> My just received 1970 (serial E8325) Raleigh Professional ("the white
> one") frameset has what appears to be "EDA" stamped in an oval on
> driveside top of the bottom bracket shell. Does anyone know what this
> stands for? It's a very similar stamping to the more familiar BGF bb.
>
> Also, this and other Professionals has what is referred to as "Latin Line"
> lugs. Were these a house Raleigh lug or possibly Brampton or Prugnat
> (which they resemble)?
>
> Peter Kohler
> Washington DC USA