Just added a review of the original Sintra, from Hi-Fi Choice, January 1991, which you can find here. The Sintra has always been one of Royd’s top end 7ltr stand mount models and has a strong reputation for being one of his best. Its rarity only compounds this.
Just added a bunch of Sintra photos. A couple of sets for the Sintra I (early and later variations) and the much later Sintra II.