A silver pot is an item in Evony TKR (The King's Return).
Silver Pot is one of the collection items in the exhibition for the Art Hall. It is one of four parts in the Pot Hall. After the set is completed at three stars, you can trade additional Silver Pot fragments for gold.
The description of Silver Pot in Evony TKR says:
Pots made from different textures. The important exhibits in Pot Hall.
Silver Pot is known to potentially be obtainable from opening Artwork Fragment Chest I, Artwork Fragment Chest II and Artwork Fragment Chest III. The links for each item are below:
Note: This list may be incomplete.