Villeroy & Boch - Wallerfangen
Vaudrevange, now called Wallerfangen. Saarland.
Hersteller / Manufacturer.
Known dates: Factory founded in 1789 and closed in 1931.
Founded by Nicolas Villeroy. Born 1759. Died 1843.
Reference: Answers
This piece probably started out life as a 1 litre pitcher produced at the Wallerfangen factory. It is thought that the lid was added after it left the factory. 
This base mark is on the pitcher above. It is thought in this case that the number of "petals" protruding from the base, could possibly indicate the year of manufacture between 1881 to 1889. So in this case the year might be 1885.
"Mercury" Ink stamp. 1874- 1909 
Villeroy & Boch - Wallerfangen plate, "Weekend". with mark equating to 1920 - 1935. 
V&B Wallerfangen "Made in Saar Basin" which was in existence between 1920 and 1935, on the base of the featured plate, above. 
"Mercury" Ink stamp. 1874- 1909 
Believed to be the only design of drinking stein produced at the Wallerfangen factory. This 0.5 litre stein is extremely similar to the stein produced at the Villeroy & Boch - Schramberg factory
"Mercury" Ink stamp. 1874- 1909 on featured stein. 
Depose / Gesetzlich Geschützt / Registered All meaning, in French, German and English, a protected design. 