These beautiful and rare pieces are marked "Thomas, R, Germany" on the underside. The "R" is for Rosenthal as they were a majority owner of the Thomas Porcelain company starting from 1908, while still allowing them to operate as an independent subsidiary. The pattern has no formal name but is referred to as "7510". It features an off-white heavy porcelain china with gray tulip flowers and platinum trim. The backstamp marking was used from 1953 through 1960 dating these pieces from that timeframe. This set includes two oval serving platters. Smaller Platter: 12.5" long by 8-1/2" wide Larger Platter: 15-1/4" long by 10" wide The condition is as shown in the photographs. No chips or cracks. Little to no surface wear.