1960 rosenthal gloriette china platinum rare

When it comes to mass produced  mid 20th century porcelain, the word "Rare" does not really apply. Replacements.com has quite a bit of it in stock, here's a listing for it:

http://www.replacements.com/webquote/R__GLP.htm

For what it would really sell for take Replacement's price and divide it by three, whole sets often sell at auction for less than $500.00

http://www.liveauctioneers.com/item/8365972