Wally bought some thick old-fashioned tweed for his coat from Burda #8275.
Lined with red flannel backed satin, this is a great project as a first tailoring project. The garment itself is pretty straightforward, and the looser wool allows you to tailor it with a mistake or two without looking homemade.
Burda #8275 is out of print, but it was popular enough that you can usually find it on Etsy or Ebay.
You can read what is said about it on patternreview.com here.