This is based on the statue of 'Orlando' in Dubrovnik by Bonino of Milan from 1418. You can also see a similar effigy on the Tomb of Giovanni Cose of Naples from 1418 in the Louvre. A picture of this appears in "The Sanctuary of the Madonna delle Grazie with notes on the evolution of Italian armour during the 15th century." by James G. Mann printed in "Archaeologia" Journal of The Society of Antiquaries of London 1930 Vol.80 pages 117-142. The picture is Figure 2 on Plate XXIII.
       The armour is sized for someone between who's height is 5'8"/172cm to 6'2"/188cm and who's weight is 200lbs./91kg to 220lbs./100Kg.
       The steel used in this project was 4130 alloy steel. It was heat treated a Rc48 hardness by heating the plates 930C/1706F and quenching in water and tempered for 1 hour at 260C/500F. The thickness of the sheet metal used in this project was as follows: back plate 1.0mm/0.040"/19ga, breast plate, placards, and back plate wings 0.8mm/0.032"/21ga, fauld plates 0.6mm/0.025"/24ga.