Vintage Giorgio Armani Made in Italy Womens Check Houndstooth Blazer Jacket 
Tag says Size 44 (US 10), but I believe it runs smaller from measurements and listed as an 8.  Please see meas for fit guidance. 
3/4 Sleeve Length.
No fabric tag, possibly a wool silk blend. 
Excellent gently pre-owned condition!
Approx. meas:
Length: 27"
Armpit to armpit: 19" 
Back: 15"
Sleeve Length: 21"