Yes you are, Nando! Yes, you are!
I'm very psyched to get a bit of good news for a change (I had a particularly bad day otherwise!). In Michael's newest thread in incendiary arrows, he posted pics of Italian glass/clay grenades that are nearly spot-on for mine! Not to say mine is Italian, but I think that it cinches it that it is indeed a bombard/incendiary. Typically, when I present a 'mystery piece', it usually ends up being something mundane (As in 'Hey, I just liked up a cool Malabar Moplah knife!!! and then, it's -'Sorry, old chap, that's a Brazilian pizza cutter!
). Nice to have found something for a change!!