It belongs to the series of «Lauretan Litanies», based on the engravings of the Klauber brothers (Joseph Sebastian and Johann Baptist), published in 1750. This white enameled Rococo asymmetrical frame plaque represents the litany of Salus infirmorum (Health of the sick) as indicated by the legend at the top of the scene.
The Klauber brothers’ «Litany Lauretan» series consists of 57 engravings. It is possible that Alcora made them all as a commission for a convent or other religious establishment. Copies of the same series are preserved in the National Archaeological Museum (Madrid) and in the Hispanic Society of America (New York).