I don't remember doing it, but it looks like I scratched our initials into the defective finish that the guys who did our upstairs bathroom put on the outside of the old door we re-hung. Unlike the side that faces into the bathroom, the outside started to turn white and look icky. Since we settled for a number of years with just using a curtain instead of the door, I've been in no hurry to take it down and sand that off and see what we should put on it. In the meantime, here's my last February Flash of Red photo. For a wider look at the door: https://365project.org/mcsiegle/Alternates/2024-02-29