A Tool of the Past

Exploration Stage: Postal Dovecote
From: Kira Woodville
Description: We need a clue as to where to look for the culprit’s lair. For this, let’s study the objects brought by the pigeons over the past week. An old screwdriver with a strange coating caught my attention. Take a look!
Completed: Do you think these are traces of fog corrosion on the screwdriver? It must have been stuck in the fog for a long time! It’s an old-style tool, like the ones lamplighters used back in Carlos’s youth.