Limited edition of 60 pieces longines watch flagship heritage 60th anniversary limited edition l48178762 longines celebrates this year the 60th anniversary of its first flagship collection for this occasion the watchmaking brand introduces the flagship heritage 60th anniversary 1957 2017 this numbered 18k rose gold model houses an l609 mechanical calibre in its 385 mm case and is produced in a limited 60 pieces edition the brushed silvery dial is adorned with 8 indexes and 4 arabic n