The Writing on the Wall

I'm currently redecorating in the house and have moved my office up to the top floor temporarily - I like it up here but its a flight of stairs to the bathroom, two to answer the door and three to get a cup of coffee and I also have no wired network! I started stripping the wallpaper off my real office (which will be my office again once its done), and look what I found:

office What's under the wallpaper?

Can you tell what it is yet? Magnificent ? In His Flying Machine

I think this room is going to be a bit of a mission, I have one wall with half a missing skirting board which has had its fireplace plastered up twice, one where the plaster is falling off much faster than the old wallpaper, and one outside wall which is damp and in such bad shape I actually had to go outside and check it looked OK from there. And this is is the smallest room in the house ...