Hi guys I've just bought my first omega watch, and I was wondering what the significance of it being a 'numbered edition' is?
By your username and query, I assume you bought the straight-lug Speedmaster "First Omega in Space". This is a numbered edition, but not a limited edition - so all it really means is Omega will sell as many of them as demand will support, and simply number each one individually. This is not to say it isn't a special watch - it is, and you should enjoy it!
Welcome on here, do post a picture of your watch here: https://omegaforums.net/threads/first-omega-in-space-2012-speedmaster-fois-roll-call.550/