Each shell is three lathed pieces: a rimmed brass head, a straight hull and a six-point star crimp on the mouth. The five lean at their own small angles inside two cord loops, and one loose cord tail curls away from the upper loop so the bundle does not read as a solid block. Bounding size 0.23 by 0.21 by 0.20 m; metres, +Y up, +Z forward. Origin: free, at the centre of the bundle, because a collectible like this is hung in mid-air at whatever hover height the level needs and a base origin would put it on the floor. The geometry surrounds the origin, reaching 0.106 m below it and 0.106 m above it. Clips: bob (2.4 s), spin (3.0 s). Rigid node animation only: named nodes with translation, rotation and scale clips, no skinned rig and no skeleton. No collision volumes and no navigation data. Opaque materials throughout; the pack uses no alpha blending and no transmission.