Personally, I think all cigars should have the harvest year and or production batch on them somewhere. Being a fermented agicultural product, the flavor can vary significantly from year to year and batch to batch. I've had a couple smokes that I thought were pretty damn good, turn out so-so when I bought a second run of them. Consistency problems like this tend to be found less often in higher end cigars. For instance, every single Cohiba (Red Dot) I've smoked has tasted pretty much the same.