No Image Lot 1621 A Group of Eight Signed Commemorative Posted Covers for the Adapt Trust. Includes: Helen Mirren, 1621A Group of Eight Signed Commemorative Posted Covers for the Adapt Trust. Includes: Helen Mirren, Cadmore Auctions Ltd A Group of Eight Signed Commemorative Posted Covers for the Adapt Trust. Includes: Helen Mirren, Melvyn Bragg, Ronnie Corbett and nine others. Add to watchlist Live