Portrait of Franz Liszt 1811-86 - Fritz Kriehuber
Portrait of Ambrose Corbet, aged 50, of Hanbury Park - Robert Edge Pine
Portrait Of A Gentleman, Half-Length, Wearing A Brown Jacket With A Lace Trimmed Coat, Holding A Quill - North-Italian School
Portrait of a gentleman - (after) John Hayls
Portrait of a gentleman, half-length, in a black jacket and white waistcoat - (after) Sir Francis Grant
Portrait of a young Man holding a Medal - Sir Godfrey Kneller
Maria Bicknell (or Mrs John Constable) - John Constable
Portrait of a Young Man - Sandro Botticelli (Alessandro Filipepi)
A portrait of a lady, full-length resting on a pilaster - Mary L. Gow
Portrait of a gentleman - David The Younger Teniers
Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the 
