Slate grey dress blazer with a delicate plaid / check pattern that has hints of blue and brown.  This is a single-breasted ventless jacket  with two-button closure and three buttons on the wrists.  The pattern is a fine grid of blue, brown and dark grey stripes.  Three exterior pockets and three interior pockets and fully lined in acetate.  Good vintage condition with no major damage: there is a small hole in the lining of the right armpit and a light spot on the outside right pocket.  Please see photos.