Vintage Lauren by Ralph Lauren Navy Wool Blazer in size 16.  The Ralph Lauren gold and red crown Crest on the chest patch pocket. Three (3) gold button closure and four (4) matching buttons on the cuff of each sleeve. 

Jacket is newly dry cleaned and in Excellent Vintage Pre-Owned condition. No issues found. See Photos.

Measurements are:
Length is 28.5" from shoulder to hem.
Chest is 22" across the back from side seam to side seam, 20" at the waist and 24" at the hem.
Sleeves are 24" from shoulder seam to hem.