[CrazyRu]

The Valiant was only one example, and I am trying to find others of the same caliber.

Thanks again for the replies!
Philippe

All these manufacturers have had models with centerboards:

Freedom,
Able,
1987 Able Custom Sloop/Cutter - Boats.com
Packet Island

and somewhat arguably lesser caliber
C&C,
Tartan,
Bristol,
Sabre,
Person,
Benetau, and many others.