I’d just also mention, the second generation Hour Vision did away with the sapphire case design. While this is just my assumption, it doesn’t make sense that Omega would make the second generation watch intentionally worse if it weren’t necessary, and I really think cost saving was that reason. This watch when new was really a halo product for the brand, and I get the impression they probably made little if anything on the Hour Vision, given how complicated the watch is.
Given the current market price on eBay is typically under $3,000, and occasionally under $2,000 for strap versions, these are some remarkably cool pieces for the money, although as
@Archer mentions, don’t drop them or you’ve done the entire value of the watch.