Welcome!
I suggest to look at the assessment guide here:
http://speedmaster101.com/145-022-71-74-76-78/
You will find that several details that would make this watch attractive for vintage collectors are lost.
The dial, hands and possibly the pushers are all service replacements. Original Omega, but not "the original" for this watch.
This is what would be the normal case for any watch being handed over to an Omega AD for a service.
If the ref is a 1974, it should not have a stepped dial. The 145.022-71 was the latest Speedy with such dial installed. However the one in your watch seems to be a modern replacement based on the lume material.
Not a perfect vintage Speedy, but a perfectly wearable Speedy IMO.
Click to expand...