identify year of production of different whisky
By law, all Scotch whisky must age no less than three years. When the distillery puts the age statement on the bottle (10 years, 12 years, etc) that is the age of the 'youngest' whisky in the bottle (unless it is a single cask bottling, there are several ages in the mix).
But, I think what you are asking is the year of distillation indicated any where on the bottle/label. The general answer is no. There is no indication of either year of distillation or year of bottling (i.e., when it came out of the maturation cask). However, there are now some small batch expressions where all of this is handwritten on the label.