Q1. I wouldn't have a clue
Q2. Factured lenses or chips around the outer edges are acceptable if a) they are in the outer 1/3rd. (But I say the outer 1/10th or so is acceptable) and b) if they are spotted in with matt black paint as this prevents refractive light scatter
Q3 ?
Q4 Bloomed... Questionable process and always has been. SAID to improve sighting in conditions of half light and poor visibility but this is a very subjective matter. In any case, the first couple of polishes will remove the blooming coating. Especially the way civvy shooters set about their optical instruments with dirty old rags and dishwasher powder.