The average Lange watch receives a floral engraving on the balance-cock, a small piece of metal smaller than a human finger nail.  But, because the work is completed by hand by one of six crafstmen, each cock comes out looking different.  Clients may also request a particular design on the balance cock as seen below.  The group of engravers can complete between five and ten commissioned, custom balance cocks per month, and they are typically reserved for more complicated pieces.  As you can see below, this custom design is destined for a Richard Lange Tourbillon pour le merite, which is, as they say on the streets, “no joke”.