Box is thick maple, lid is back-engraved medium frosted. Adapted from festi.info, I added some stoppers to the hinge to prevent the lid from flopping over.
The castellated rim was an afterthought, after realizing that the rearmost lid plate has very little connection to the rest of the lid. The front is similar (no fingers) but at least there’s more interfacing material, and it’s not a torque point.
The “ring” is just an attempt to keep it from snapping off, by adding more meat for glueing.
Top Tip: Don’t make your lid height low-profile enough that there’s no room for a finger joint on all 4 corners.