Wind of the Past

Exploration Stage: Atelier Delamode
From: Angelique
Description: I know how to finally convince you that I have been in the fog, Mr. Black. The house with red windows was locked, but the others were open. There I found abandoned belongings. Look at that fan over there, it should interest you.
Completed: This old fan stood opposite the door. It was probably used to drive away the advancing fog. Turn the fan over - there are initials on its base. They are familiar to you, are they not?