The following year he lost the finals again to Joseph Perez, but caught the attention of European promoter Charles Raymond who offered to manage him.

[2] Cohen, who at 5' 3-1/2", was a short but muscular champion, won the French bantamweight title in November 1953 and the European championship in January 1954.

[4] Before a crowd of 20,000, on 27 February 1954, Cohen took the European Bantamweight Title, defeating John Kelly in a third-round knockout in Belfast, County Down, Northern Ireland, Ulster.

[8] On 19 September 1954, he won the vacant World bantamweight title in a fifteen-round split decision in Bangkok, Thailand, against police Lieutenant Chamroem Songkitrat.

[9][10][11][3] Later that year, his marriage took place at the Synagogue de la rue des Tournelles, in Paris, presided by Rabbi David Feuerwerker.

[4] On 23 December 1954, Cohen was stripped of his title by the National Boxing Association for failing to defend it within 90 days against Raul "Raton" Macias.

[12] Both the New York State Athletic Commission and the European Boxing Union continued to recognize Cohen as champion.

[13] On 11 December 1955 Cohen lost in a ten-round technical knockout against French featherweight champion Cherif Hamia before a crowd of 14,000.

[17] On 3 September 1955, he drew with Willie Toweel in a fifteen-round world bantamweight title bout in Johannesburg, South Africa.

[19] Cohen lost a title bout to Mario D'Agata on 29 June 1956 before a crowd of 38,000, in a seventh-round technical knockout in Rome.

Suffering from injuries, he retired from boxing in the 1960s, and moved with his wife, Zita, to the Congo-Brazzaville and began working in his father-in-law's textile and retail business.