Block & Tag
Here we have a wooden block with a locked lid and a loose square section that can be removed from the base.
The loose section is held in place by a magnet but when removed the finder will see a short chain with a number tag hanging from it, well that was too easy for sure!!!
In fact the code for the combi lock is gained by locating the detail branded in the underside of the loose block as it wont open with the detail on the number tag LOL
Inside is a waterproof container with log book included.