I don't possess this
work,
nor know where to download it.
According to
Eckhel I, p. CLXIII, however, publication dates were earlier:
vol. I 1741, II 1744, III 1745, IV 1759.
Apparently the
work consists of plates only, which unfortunately can only be used with caution according to
Eckhel, because the illustrations, all of coins in the author's
collection, are often clearly inaccurate or erroneous.
I think that parts or maybe all of Arigoni's
collection was acquired by Turin, so maybe Turin possesses today that particular Bagis coin you are interested in.