In our fortnightly Picture This column, museum staff focus on a ‘Good luck’ postcard… This beautiful colour postcard from circa 1910 is brimming with good luck motifs. The four-leaf clover is an enduring symbol of luck. While the origins of this belief are unclear, there are numerous references throughout history and across many cultures. The four leaves were often thought to represent faith, hope, love and luck and could even allow the holder to see fairies!The card also features a horseshoe – another strong emblem of luck, commonly associated with weddings as a symbol of fertility. And the i…