Danbury Mint 'A Dozen Roses' Red Bouquet Pin with a Center Diamond. Elegant bouquet brooch featuring a cluster of vibrant red roses. The Danbury Mint 'A Dozen Roses' Red Bouquet Pin is a vintage piece that features a beautiful red roses with a real diamond. Signed by the brand Danbury Mint, this fashion jewelry piece is from the 1990s and exudes elegance with its classic round diamond shape. Pin is approx 2" long.