WIENER, Jacques: (1815-1899) was the eldest of three brothers [the others were Leopold (1823-1891) and Charles (1832-1888)], all of whom excelled in the art of medal engraving. Jacques was born of Hungarian parents, studied in Paris and then settled in Brussels. In 1845 he decided to engrave medals representing the exterior and interior of monuments with a degree of precision of details that had not yet been attempted. The first in the series was a group of ten medals, 50 mm in diameter, depicting famous Belgian churches. All but one of these medals were done in collaboration with his brother Leopold. Jacques Wiener then undertook what was to be a series of 50 medals, each 59 mm in diameter, entitled "Medals of the most remarkable Edifices of Europe", to represent the principal monuments of Europe. Of these the majority were cathedrals, churches and mosques. Three depicted synagogues. He was unable to complete the whole task as only 41 medals were issued, some of which were done in conjunction with his brother Charles. He also engraved dies for a large number of other monuments, including prisons, town halls, the stock exchange etc. In addition to buildings, he engraved dies for individuals commemorating important events in their lives. His work was not only prodigious but was also the best rendition of perspective of the interior of buildings I have seen. This intricate and minute work, however, was to take it toll, for by 1872 Wiener had almost completely lost his eyesight, and after 1874 he produced no more medals. His collective works have been catalogued by Emiel van Hoydonck who lists, mostly with photographs, 233 medals and 62 jetons by Jacques Wiener. The vast majority of his medals were struck in bronze, with a relatively few in silver.

WIENER, Leonard: Leonard Wiener (1823-1891) was a Belgium sculptor and medallist. He studied initially in his brother Jacque Wiener's studio, then at the Academy. In Paris he became a pupil of the famous sculptor David d'Angers and of J. J. Barre, Chief engraver of French coins. At the death of Braemt, in 1864 Leopold Wiener was appointed to fill the post of First Engraver to the Belgian Mint.