This is a vintage Wedgwood Osborne Bread & Butter Plate, black and gold rim with flowers.  The bone china dish was purchased in 1991and measures about 6".  The plate bottom is stamped with a vase emblem above "Wedgwood - Bone China - Made in England - Osborne - R4699".  The size works well as either a bread & butter or dessert plate.  Please note that I have multiples for sale and if you purchase more than one, they may be worded differently but they were all purchased in 1991 and are in excellent condition, only used a handful of times in 30 years.  The Wedgwood Osborne pattern was initially offered in 1983 and discontinued in 2006.