it's a double breasted coat with a cowl neck and contrast fabric sleeves.
Start looking at the big pattern companies (Simplicity, Butterick, Vogue, McCall's, Burda & Kwik Sew). My gut says Burda and Vogue will be more likely, but you never know. Patterns won't likely have contrast sleeves but that is easy, just cut them from different fabric.
You might have to marry a collar from one patter to the body from another. sometimes this is hard, but in this case it will be easier than a lot of other possibilities.
Fabric: Trigger, duck, a heavy twill. go to a fabric store and touch, does it feel like outer wear?