in 1930 it was reduced back to . Post-war evolution In 1946, after the abolition of the monarchy and proclamation of the Italian Republic, the figure-eight knots of the Savoy were replaced with two curvy lines. Concurrently the badge was completely redesigned, and further reduced in size to , a diameter unchanged ever since. Made of stamped steel, the new badge bore the traditional elements—the scripts, the cross, a newly stylized biscione and a thin laurel wreath—embossed in antique silver, over a uniform Alfa Red background, which had replaced the blue, white and light blue fields. This red-and-metal badge was used until 1950, when the company switched back to a traditionally enamelled and coloured one; in 1960 the badge was changed from brass to plastic, without substantial differences in design. At the beginning of the 1970s the all-new Alfa Romeo Pomigliano d'Arco plant (near Naples) was completed. When in 1972 the Alfasud produced there became the first Alfa Romeo passenger car manufactured outside Milan, the word "Milano", the curved lines and the hyphen between "Alfa" and "Romeo" were eliminated from the badge on all Alfa Romeos. At the same time it was redesigned, most notably acquiring a modernised biscione and type face. After a mild restyling in 1982, which deleted the wreath and changed lettering and all chrome details to gold, this iteration of the badge remained in use until 2015. 2015 redesign On 24 June 2015, 105th anniversary of the company, a new logo was unveiled at a press event at the Alfa Romeo Museum; together with the Alfa Romeo Giulia as part of the brand's relaunch plan. The redesign was carried out by Robilant Associati, who had previously reworked several other Fiat Group logos—including Fiat Automobiles' and Lancia's. The logo colors have been reduced from four to three: the green of the biscione, the red of the cross, and the dark blue of the surrounding ring. Other changes are a new serif type face, and the absence of the split white and light blue fields, replaced by a single silver textured background. The Quadrifoglio logo Since 1923, the quadrifoglio logo (also called the 'cloverleaf') has been the symbol of Alfa Romeo racing cars and since WWII, it has also been used to designate the higher trim models of the range. The quadrifoglio is usually placed on the side panels of the car, above or behind the front wheels—on