Burberry men's shirts M

Used in good condition except right pocket snap is broken. And I am not sure about the material. Silk? It's heavy. And the color is blue-ish purple. Little shiny. 4 snaps and 3 buttons on the front. Has 2 shoulder snaps. and marked Burberry London each button and snap. Shoulder to Shoulder 17" Armpit to Armpit 20.5" Sleeve 24" Shirt length 29" please do not hesitate to ask any question. I will try to answer the best I can.