Really nice to see those, Fermi; thanks! For those who don't know it, it's worth pointing out that Triumphator is very aptly named, in the sense that its enormous flowers really stand out - particularly because of their size - in any display that includes other lilies.
Do your L. leichtlinii set fertile seed? I ask, because the Dutch have recently been distributing this attractive yellow (rather than orange) variety in very large numbers, but because their plants have been micropropagated from a single clone they don't set seed unless pollinated by a different lily. However, there are fertile stocks around, grown from seed rather than from the Dutch supplies.