Vintage Antique Distressed Tailcoat - Formal Evening Swallowtail Tuxedo Jacket from Hagstrum Bros St Paul MN - owner was from Towner ND, I believe it is Wm Christiansen - to my eye the date is 12-14 (Dec 1914 likely)
Feels like soft worsted wool and is fully lined in silky satin. Buttons are fabric covered and each sleeve cuff button has wear and is missing one button. Note sleeve linings are shredded and green color is faded to an ombre effect - the shoulders are lightened to yellow and this goes down each sleeve. An additional flaw is some residue on sleeve cuff, see closeup photo.
No size tag. Measurements taken with items laying flat.
The jacket: 38" in length down center back to tail hem, 19" at shortest length in front. May fit 34-38" chest (mannequin is 32" chest). 16. 5" shoulders, 26" sleeve from shoulder.

This item is sold from an excellent, highly rated vintage boutique.