In 1997 Patek Philippe moved all its production facilities under one roof into a new building in Plan-les-Ouates, Geneva. The inauguration of the workshops in 1997 was celebrated with a collection of new limited edition “Pagoda” watches. The Pagoda ref. 5500 was produced in a limited edition of 1,100 pieces in 18K yellow gold —gold dial—, 500 in 18K rose gold —silvered dial—, 250 in 18K white gold —salmon dial—, and 150 in platinum —black dial. These four fascinating watches are fitted with a very unique rectangular case with its case band shaped like a 'Pagoda' —when seen from the side— and dials featuring Roman numerals and subsidiary seconds at 6 o'clock.