Portugal

Found covered in grime in a Portuguese auction house, a three quarter-length portrait of a dark-haired lady by Dutch artist Willem Wissing (1655-1709) has been restored to its former glory by a Belgian dealership and the identity of its sitter revealed as a British aristocrat.

Lisbon firm Veritas is holding an estate sale of works from the collection of the Count of Póvoa, D Manuel de Souza e Holstein-Beck, who died in 2011.

This gold-mounted trefoil shaped rock crystal tazza, dated to the 18th century, will feature in the sale of antiques, works of art, silver and jewellery at Veritas in Lisbon on April 14-15.

On September 30 Veritas in Lisbon is selling Asian works of art from a single-owner private Portuguese collection formed over the past 35 years in an auction titled An Erudite Collection: objects and works of art from Shang to Qing Dynasty.

To mark the 40th anniversary of the Speedmaster Professional as a space exploration tool in 1997, Omega created the Missions Collection.

Catalogued as French and late 19th century, this 5in (12cm) drinking vessel offered by Lisbon saleroom Renascimento appears to be an electrotype of the famous Warren Cup.

Veritas will offer a Jiajing armorial dish (c.1530-50) in its next auction in Lisbon on November 27-29.

A long-running dispute over the export of an important Old Master painting from Portugal has finally been settled after authorities ended an attempt to have the work repatriated.

This Chinese gilt-bronze figure of Guandi is the catalogue cover lot for the next auction at Veritas in Lisbon, on June 27-28.