"Marco Guidizani
Venetian, active 1454/1462
The medalist is known solely from four signed medals of Venetian sitters which date his work to the period 1454 to 1462. The earliest medal of the group is NGA 1957.14.731.a,b and the other medals portray Orsato Giustinian (Hill 1930, no. 413) and Doge Malipieri (Hill 1930, nos. 414-415).
[This is the artist’s biography published in the NGA systematic catalogue of Renaissance medals.]" - https://www.nga.gov/collection/artist-info.2126.html, 23.08.2018
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