has pictures of all the types of Huret Jubilee derailleur - unfortunately there are no dates.
The one with the drilled pulley cages is the final incarnation and was produced both under Huret and Sachs Huret names. I am pretty certain it was available by 1978 - I do have Huret parts lists but at present cannot access them at all easily...
Hilary Stone, Bristol, British Isles
> I have one which came off a 1984 Cinelli SC and it ist not marked Sachs.
> It is drilled very nicely and totally looks like a factroy job. I could
> be earlier as well as the bike was a mish-mash with even had a Campa
> 50th anniversary seatpost wit red inlaid flutes and script and a nicely
> drilled SR-crankset. I also would be interested in the introduction date
> of the drillium Jubilee as I am thinking about putting it on a 1978 bike
> which came with the unique four hole front der. But without the matching
> rear mech.
> Michael Schmid
> Tel.: +49 8821 798790
> Fax.:+49 8821 798791
> mail: email@example.com
> -----Ursprüngliche Nachricht-----
> Von: firstname.lastname@example.org
> [mailto:email@example.com] Im Auftrag von r cielec
> Gesendet: Mittwoch, 4. Februar 2009 20:54
> An: Classic Rendezvous
> Betreff: [CR] Huret Jubilee "Drillium" Circa When ?
> Ahoy !
> Does anyone know the approx. dates the drillium Huret Jubilee rear
> derailleurs were offered ? I just assumed these were Sachs-Huret factory
> I've gotten into a discussion with a long-time bike shop owner who
> insists that Huret Jubilee drillium rear derailleurs are not factory
> produced but, after-market or hobby.
> Thank you.
> Richard Cielec
> Chicago, Illinois; U.S.A.