Nikolas Frantz was a Luxembourgish bicycle racer with 60 professional racing victories over his 12-year career. He rode for the Thomann team in 1923 and then for Alcyon-Dunlop from 1924 to 1931. He won the Tour de France in 1927 and 1928. In the yellow jersey at the 1928 Tour de France after stage 1 — 1 stage, June 17 to June 17. Wiki link