I want to know the answer to the following question:
Who purchased the 13th century mosaic from the the San Cipriano Church?
All the background I'm provided with is that "The apse of the San Cipriano Church in Murano was decorated with an impressive golden mosaic from the early 13th century showing Christ enthroned with Mary, St John and the two patron saints, Cipriano and Cipriana.". Is that enough to answer the question?