Question about warranty booklet

[adnan001]

Hello, this is my grandfather’s watch reference 145.006-66 (i read it on the caseback, i also have the gold bracelet but i changed it for an alligator strap).
I found this warranty booklet that i think belongs to it because as far as i know he didn’t have another omega chrono and the price is expensive at the time for a steel watch
But my question is that the reference number doesn’t match any omega watch because i tried searching for it on the internet.
I tried searching for the store and it seems legit so my question is it normal for vintage omega watches to not have the right numbers on warranty booklets?

 

[gatorcpa]

Looks like the retailer may have put the movement serial number where the case reference number belongs.

Only way to find out is to have a watchmaker open it up.

gatorcpa

 

[adnan001]

gatorcpa

Looks like the retailer may have put the movement serial number where the case reference number belongs.

Only way to find out is to have a watchmaker open it up.

gatorcpa

Thank you for your reply, i’m thinking about servicing it so i’ll ask the watchmaker to tell me the serial number and i’ll check it.

 

[adnan001]

gatorcpa

Looks like the retailer may have put the movement serial number where the case reference number belongs.

Only way to find out is to have a watchmaker open it up.

gatorcpa

Do you know what the metal field on the warranty means?
I tried looking for the number on the internet and couldn’t find anything