Item for each vault 7 lire
outlay for blue and gold 3 1/2
time, 4 days
for the windows 1 1/2
The cornice below the windows 16 soldi per braccio
item for 24 pictures of Roman history 14 lire each
The philosophers 10 lire
the pilasters, one ounce of blue 10 soldi
for gold 15 soldi
Total 2 and 1/2 lire.
Taken from The Notebooks of Leonardo da Vinci edited by Jean Paul Richter, 1880.