This is my first post and I am not at all an omega speedmaster specialist.
I own two Cal 321 Speedmaster. One of the two is this specific model bought to a collector 20 years ago.
Reading the "Moonwatch Only" book I found out that this watch is hybrid though it works perfectly.

The case is a 145012 SP 1967 model.
The movement has the number 205265xx which would be for a 105.003-63 or 105.012-63 (?). That means rare or very rare (?).
The dial would be for a 105.003-65 (?).
The bezel is recent as well as the hands (?).

I need the advice of OSP experts. Or suggestion, and even parts exchange.
Am I wrong somewhere for the different attributions?
What should I do with it? Sell it in parts, or try to make a complete original one, exchange parts, etc...

Thanks for your help!