There are some curious differences between Walther Prismen and Libochovice 1700.
If you compare the catalogues, the pattern on the pot lids you can spot the difference easily as the Walther one has a wider spaced spear-pointed pattern on the lid, whilst the Libochovice one has a narrower closer together spear-pointed pattern.
The Libochovice 1700 candlestick catalogue image appears to have the same spear-pointed pattern round the candle cup, but the Walther Prismen one is totally plain.
But, and there has to be a BUT, eh... the tray which seems to be Libochovice is most often seen with the pot with the Walther lid and the plain candlestick!