Vintage 1930's gents double breasted grey waistcoat - Ruby Lane
Mens Wool 3 Piece Charcoal Suit Double Breast Waistcoat Tweed - Etsy
Blue double breasted waistcoat - Made in Italy - Pini Parma
Dobell Mens Dove Grey Morning Suit Wedding Vest Regular Fit Shawl Lapel Double Breasted-S (34-36in) at Amazon Men's Clothing store: Business Suit Vests