What positions an already stellar package design above the competition? The addition of a hand-written detail, like a batch number, makes a high-end product feel even more special. It is worth the additional time it may take in the packaging process, especially when you are considering the purchase of a new unknown product at a premium price.
Both Watershed Bourbon and Slingshot Coffee Company have incredible examples of a fantastic product in beautiful package design with actual handwriting on their label. A detail in design like this conveys “if they care this much about such a small detail, the product must also be of similar hand-crafted quality”. Plus it is just beautiful in the contrast to the printed graphics.