Boy howdy, Stephen, these are great mibs! I like the old ones with a lot of transparent glass - great examples.
I'll bet the 3rd one is a little oversized- 11/16"?
Similar maybe, but I see a good bit of transparent orange in Art's. I have some like yours and as I recall they are opaque.
And these pics actually look pretty good compared to others I've seen, so whatever you're doing now, keep doing it.