Not all English church clocks have blue faces, but the explanation for those that do is that it was a decree by Henry VIII that, following God's command to Moses (Exodus 39) to make Aaron the priest "garments of blue with gold bells", church clocks should be "blew with the signs upon them gilt".
The turret clock is one of the earliest types of clock. Beginning in 12th century Europe, towns and monasteries built clocks in high towers to strike bells to call the community to prayer .Fourteenth century.Year1370CountryFrancePlaceColmarLocationcathedral towerTypestriking clock