Sinn 910 Anniversary Chronograph With A Clean Dial Sinn by wholesalewatches - April 12, 20160 To tribute to their fans, Sinn brought a limited edition-The 556 Anniversary at Baselworld 2016. It is limites to 1,000 pieces. It’s essentially a 556, which is an attractive and simple 3-handed watch. In this case, it features an anthracite dial and a simple “1961-2016” above 6:00. For 1,000 Euros