[Marcello]

I cannot see the picture, I get the usual file not found. Still it would not rule out ERA. For a start if it is ERA it is an enclosed design, like Kontakt-5, rather than Kontakt EDZ style flying plates. So even if there is something stuck in the outer layer it does not mean that it does not work like ERA inside. Then it is not supposed to detonate as soon as something sneeze at it, for obvious reasons. It may well be non sensitive enough to resist some amount of fire.