The central motif of this plate or salver has the engraved Portuguese royal coat of arms and the inscription VIVAT IOANNES V [Viva João V][Long Live João V], which celebrates the monarch founding one of the most important glassworks in the first half of the 18th century. The ornamentation, fine vine branches and bunches of engraved grapes, follows the naturalistic taste prevalent in this factory and its chronological period: the Baroque.