|Joined: 11 May 2015|
|Location: Paris, France||
|Welcome to the forum. It is a very nice tandem you got.
The 1978 catalog shows two Reynolds tandems, a mixte (called Transalp) and a mens (called Audax). They're spec'ed with TA Specialites cranks like yours, but they have newer-style decals and a curved back seat tube. Yours must be an Audax from around 1977.