From 1899 he started exhibiting at the Société des Artistes Français. In 1907 he won the Société des Artistes Français' medal of honour which was accompanied by a bursary to allow him to study at the villa Abd-el-Tif in Algeria.
He was to stay there for 6 years. In 1923 he became a Chevalier de la Légion d'honneur. He practiced as a medallist and sculptor both of monuments and busts and in 1922 his home town of Niort commissioned him to carry out the sculptural work on their war memorial. This was followed in 1925 by his work on the. War memorial, a huge composition on which he was to work for three years and which is considered to be his chef-d'oeuvre and to be one of France's finest war memorials.
During the 1990's and early 2000's I concentrated on assembling a carefully selected high end collection of hundreds of European (mostly French and Belgian) medals and jetons. The Leonard Collection was the first such collection submitted to the Numismatic Guaranty Corporation for certification. In the process, over 400 pieces were certified. My primary goal was to collect and preserve choice examples of the medallic art of the Art Nouveau and Art Deco periods.This medal is encapsulated in a special oversize holder measuring 7 1/2" X 5 3/4".