This single-manual organ, built for the Cathedral of Evora, Portugal, is the only instrument by Oldovini to be found outside the Iberian peninsula. Restored to playing condition by the Flentrop Orgelbouw of Zandaam, Holland, in 1967, all parts of the instrument are original except for three small pipes and a restored “Nightingale” stop.

The single keyboard has a compass of 45 notes (C/E bass short octave to c3). There are seven registers, each operated by one of the draw-knobs to the right of the keyboard: Flautado Abº 12 (Open Principal 8’ – from tenor A); Flautado Tapº 12 (Stopped Flute 8’ – the pipes from C to tenor A always play; CDEFGA have a second rank sounding one octave higher); Outava real (Principal 4’ – from the lowest B-flat); Outava de 3 (Principal 2’); Cheo primeiro; Cheo secundo (two mixtures of two ranks each); Cornetilha (2 2/3’ and 1 3/5’ ranks, sounding from middle C-sharp). The rossignol (bird stop) is operated by the stop-knob to the left of the keyboard. Although there is a small modern electric blower to provide wind for the instrument, the original foot pumping mechanism remains operable.

This organ stands approximately 8 1/2 feet tall and 4 1/2 feet wide and is housed in a wooden case and with an arched top. There are two doors in the front of the case that open outward to reveal the organ's pipes. There are nine pipes behind each door opening, arranged with the tallest and largest pipe in the center and descending in scale on either side. Below the pipes, set into a rectangular alcove, is a small keyboard made of boxwood and ebony keys approximately two feet in length. To the right of the keyboard are five darker wooden draw-knobs which operate the seven registers of the organ. To the left of the keyboard is another wooden knob which is the nightingale or bird stop, which makes a whistle like a bird. Below that are two rectangular inset panels. There is a small two foot high wood bench that sits to the side when the organ is not in use. 

It is a single-manual organ, built for the Cathedral of Evora, Portugal, the only instrument by Pascoali Caetano Oldovini to be found outside the Iberian Peninsula. The organ was restored to playing condition by the Flentrop Orgelbouw of Zandaam, Holland, in 1967. All parts of the instrument are original except for three small pipes and a restored “Nightingale” stop. Although there is a small modern electric blower to provide wind for the instrument, the original foot pumping mechanism located on the lower right side of the organ case remains operable.