This was Bobby’s French-language treatment of the tune made famous by Edith Piaf (her version here: https://youtu.be/S5Y6APULyw0 )
Pop Chart Peaks: Record World 29, Cash Box 39, Billboard 45
The 45rpm single was issued on Atco 6297 - Milord (Monnot-Moustaki) by Bobby Darin
THE 1964 HITS ARCHIVE - here in one place, a good-quality library of original-release-version best-sellers and songs which made an impact that were either released or enjoyed a major chunk of their U.S. popularity within the calendar year 1964 (some were recorded in 1963).