Portrait of Henry VIII (1491-1547) - (after) Hans, The Elder Holbein
Portrait of a Lady - Cornelis I Johnson
Portrait Of An Old Man With Beard - Vincent Van Gogh
Portrait of a Young Woman - David Gould
Portrait of a gentleman, half-length, in a green coat and yellow waistcoat, holding a book - (after) Russell, John
Self Portrait, plate 29 from a series of portraits of artists, engraved by Joannes Meyssens 1612-70 - Guido Reni
Portrait Of A Member Of The House Of Savoy In Armour With A Red Velvet And Ermine Cloak Wearing The Order Of The Annunciata - Domenico Dupra
Portrait of S G Likhonin 1841 - Julia Vajda
Portrait of a gentleman, half-length, in a blue jacket and a gold-embroidered waistcoat, his right hand resting on a ruined capital - Nicolaes Maes
Portrait of a Young Girl - Sante Peranda
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 
