How can I tell if my Omega watch is real gold?

One way to tell if your Omega watch is real gold is to look at the reference number. Most Omega timepieces have a two-letter material code before this number. Once you've located the code, you can use trusted online resources to determine what metal corresponds with it. For example, BA and BD represent 18-karat yellow gold, while BB and BP refer to 18-karat rose gold. Explore a large selection of Omega watches on 1stDibs.