How can i guess the age of the speedmaster ?

Posts
1,552
Likes
3,647
Do you have the serial number of the movement ? I think it might be written on one of the papers.
 
Posts
21,631
Likes
49,004
I would like to sell it...

In my opinion, your asking price on Chrono24 is 2x the value of the watch.
 
Posts
13,144
Likes
52,204
Speedmaster101.com will provide you with some excellent parameters by which to answer this question.
 
Posts
1,461
Likes
2,354
Double check that no serial number was written in the booklets you have. Short of that you’ll need somebody to open the case back and copy the serial number off the movement.

Once you have that go to Ilovemyspeedmaster.com and enter the serial number for a fairly accurate date estimate. Also for what it’s worth your listing says the watch is 34mm which is incorrect. It’s closer to 42mm.
 
Posts
17,746
Likes
26,930
It’s either a 145.022-74 or 145.022-76(pre Sept77 build date)

Your price is high. Unless there is a step dial I am not seeing in the pictures near the hour markers.

period correct 1171/633 bracelet needs serious work and doesn’t affect price much. I’d put it around good condition using the speedmaster101.com price chart based on those pictures.

Then it’s a 145.022-69 with later production or a 145.022-71.