Part two of the lot I purchased. The platter is by Mayer China Co, the pattern in Blue Persian, and was made between 1930-1940. It is restaurant ware, and was used by the Continental Hotel in Washington, DC. The Continental was built in 1910, at 420 N Capital and E streets, It was demolished in 1975.

http://www.restaurantwarecollectors.com/forums/showwiki.php?title=Persian

The two bowls are made in Italy, but no makers mark, and the little pitcher has a mark, but is illegible, even with a magnify glass. It has blue berries on it, and is very heavy.