While Omega seems to release several new Speedmasters every year, the Moonwatch reference 318.104.22.168.01.005 shown here is the direct descendent of the original Speedmasters used in NASA missions. This watch was recently discontinued in January of 2021, replaced by the 310.30.42.50.01.001.
As a result, the market average for this watch saw a sharp increase around this time. It now trades for almost $5,000, significantly higher than the market average of around $3,000 just 3 years ago. Where do you think the price will go?