Sigismund of Tyrol replica, I believe
That armour was associated with Sigismund for years but lately I have heard reference that people now think that it was actually Maximillians. At any rate there is similar harness to it made by the same armourer (Lorenz Helmschmied) at about the same time that was conclusively Maximillians. Both are on display at KMV in Vienna. My wife Krissies armour is based on another simpler cuiras made for him at the same time by the same armourer on display there.At one point the Sigismund harness was definitely my favorite but as I have gotten more interested in jousting a simpler more dedicated piece caught my attention. There is a 1510 dutch made stechzeug cuiras with helm and arms at the KMV collection which can be seen in Leib Rust Kammer the KMV Catalog. Toby had something similar made after the blackened and gilded English armour for use in steel coronel jousting. His helm was an insanely thick 7mm at some points and made by Jeff Wasson if I recall correctly. I don't know of any pictures on line though.
Just found this...Look about an hour in.