Which 19th century department store first introduced the revolutionary concept of displaying merchandise openly for customers to touch and examine without requiring assistance from store clerks?

The retail landscape we know today was shaped by innovations from centuries past. Department stores transformed shopping from a necessity into an experience, pioneering many retail concepts we take for granted. This trivia question explores a pivotal moment in retail history that changed how products were presented and sold to consumers - an early example of retail innovation that still influences modern store design and customer experience strategies.

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Le Bon Marché (Paris, 1852)
Macy's (New York, 1858)
Harrods (London, 1849)
Marshall Field's (Chicago, 1867)