This is based on the statue of 'Orlando' in Dubrovnik by Bonino of Milan from 1413. A picture of the statue can be seen in The Venetian Empire, 1200-1670 (Men-at-Arms Series, Volume 210) by David Nicolle, Christopher Rothero (Illustrator); 48 pages; Paperback (July 1989) Stackpole Books; ISBN: 0850458994 .
        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.
       These are sized for someone between who's height is 5'8"/172cm to 6'2"/188cm and who's weight is 200lbs./91kg to 225lbs./102Kg.

       The poleyns / knee cops are made from 0.040"/19ga./1.0mm 1050 Spring Steel and the rest of the plates are made from 0.035"/20ga/0.9mm 1050 Spring Steel. The plates were heated to 1600F/871C and quenched in water, tempered for 30 minutes at 650F/343C with a coat of linseed applied, and had two more coats of raw linseed oil burned/baked on at 600F/315F for 15 minute per coat. From what I've seen the plates should resist denting as well as unhardened 304 stainless steel 2.7 times the thickness.