Vintage Royal Vienna Porcelain Tea Cup And Saucer. Gold Bindenschild marked

Any Bindenschild in blue overglaze is a forgery. In the early years of the manufactory, circa 1744-1749, the shield was occasionally painted red, purple, black or gold overglaze, but never blue. Basic rules to avoid imitations and misrepresentations include ... 1. If the base marks include, 'Royal Vienna' it is not from the Vienna Imperial and Royal Porcelain Manufactory, it is a fake. 2. If the base marks include, 'Austria' it is not from the Vienna Imperial and Royal Porcelain Manufactory. 3. If the base marks include, Germany or Czechoslovakia, it is not authentic. Vienna has never been in Czechoslovakia. 4. If base marks include, 'Vienna' or 'Wein' it is not from the Vienna Imperial and Royal Porcelain Manufactory. 5. If there is any importer's mark or other company mark, it is not authentic Royal Vienna.