I love the designs of the 5088/100P, very attractive without being too flashy. The fact that the case and buckle are engraved too is fantastic. It's very hard to choose a favorite among the types of rare handcrafts. I suspect cloisonne enamel may usually be the most difficult due to fragility of the wire shaping in addition to the enamel work required, but that's just a wild guess and it would be great to have someone more informed comment on this.