We found a cat (or did they find us?). The cat had a collar with a capsule containing the address in it (somewhat like this), but unfortunately the bottom half of it got lost at some point. I guess the thread on the bottom half was too short.
Printed at 0.16mm layer height.
Latest OpenSCAD source code available on my GitHub at https://github.com/nilsding/DDDobjs/blob/main/address-capsule-bottom/address-capsule-bottom.scad
The author marked this model as their own original creation.