EXCELLNT QUALITY. UNUSUAL FIT
I have several Schott Jackets, been buying them since the 1970s. All of the mediums (Perfecto, Bomber, etc.) fit perfectly. This medium is 4 inches wider than other Schott jackets at the waist, Sleeves are very wide, but not very long.
Maybe it's supposed to fit this way, but it's not for me.
2 starts for the excellent quality
Response from Schott NYC: As you thought, this jacket is meant to have a slightly more generous cut.