In 1948, she convinced him that the firm should introduce a self-service approach, paving the way for Switzerland's most successful supermarket chain.

After completing her schooling in Kraków, she moved to Zürich where, after passing the Matura examination in 1915, she studied law and economics at the University of Zurich, earning a doctorate in political science in 1920.

[3] On graduating, Gasser worked at the Zürich Statistics Office and as a business reporter for the Neue Zürchner Zeitung.

[2] In 1953, she negotiated an exclusive contract for the supply of record players to Ex Libris with Lenco Turntables' co founder Marie Laeng-Stucki.

The order for a thousand turntables increased to 50,000 over four years and led to development of a simple, inexpensive record player, marketed at an attractive price under the name Ex Libris Junior.