Having first been introduced in 1957 as a racing chronograph, the first Speedmaster in space was worn by Wally Schirra on the Mercury Sigma 7 mission in 1962. Hesalite Speedmasters: What’s the history? ![]() OMEGA Speedmaster Professional „Moonwatch“ It’s a topic that every OMEGA Speedmaster fan must have an opinion on – when it comes to protecting the dial, which is better: hesalite or sapphire crystal? In this article, we will be arguing the case for keeping it old-school, while also explaining why some choose the more contemporary, “luxurious” option of sapphire crystal.
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