Believe me, if I we're a re-caster, you would see these everywhere. I don't know the first thing about re-casting. And those of you who know me, well, you know I am not skilled at any of those types of things. Mike, Jon, Rob, Jason, Jacob, etc.
I do know you brother and that's why I agreed with Phine's assumption, plus the fact that all the parts look super official. Of course they can be recasted but you don't typically see clear acrylic items and pieces still on a tree in recasts. I know that even if you did have the know how, you wouldn't do something like that... but Eldorado doesn't know that. Some of the tell tale signs of legitimacy I mentioned might not be apparent to everyone, so conversely some may read all of that as being fishy.
You can't exactly blame him for being wary, so don't take it personally. I'm sure he knows that it's legit now