I inherited a vintage Omega Speedmaster

eugeneandresson

That’s a 105.003 with a swapped caseback, according to the movement and the dial (a common thing to happen back in the day at service before these watches became so valuable was a caseback swap). It’s difficult to see in that pic of your father but the hands look all white in it, which happened only from the next reference up from 2998. Still a lovely heirloom. Cherish it! And lovely pic of him 👍

Edit: to clarify what I meant, but did not say, for posterity of those who can not infer it.

SN puts it in the range of 105.003-63/64.
Dial is for a 105.003 -> 2998/105.002 dials have minute track painted to the step in the dial, whereas 105.003 dials the minute track stops with a gap before the step (as in the watch pictured).
Fathers picture : clearly white baton hands in that picture (only found in later 105.002's onward).
Via occams razor thus...

Edit edit : if the silver rehaut is original (i think it looks silvery in the picture of your Dad) it may even be an early -63. It all depends on the 't swiss made t' (or lack of t) on the bottom of the dial, which is not visible due to the displaced nature of the minute track (and swiss made) away from the step, and the silver rehaut which has a slightly smaller diameter than the later black one (i think). If you can see the top of that from an angle, do post a pic.

ericNJUSA

I cannot see any indications of the "T Swiss Made T" from any angle, but I'll try and use my camera to zoom in at an angle.

Dan S

Very sorry to hear about your father ... it's great that you have such a wonderful heirloom. A 2998 is a special watch, and restoration is possible, if you choose that path. You should take your time and learn about the reference. Don't rush into it. Ultimately you can choose how much you would like to keep it in the final form that your father had it, vs. how much you would like to restore it to its original condition. Period-correct parts are available, at a price.

Your watch has some replacement parts, including the pushers. I don't think the caps are missing, they are actually a different style of pusher (inverted/inverse style) that has been installed. Certainly non-Speedmaster and probably non-Omega ... just something that fit. So I agree with getting the correct pushers, or at least authentic Omega service pushers. The rest of the watch looks to be authentic, but some parts are not original. The sweep hand (possibly all the hands, but the sweep hand is most distinctive) and bezel are authentic Omega replacements, likely from the 1970s. Such parts were often installed during a service. Case, case-back, and dial look original. Now that these watches are highly collectible, people fuss over the originality of parts. 40-50 years ago, owners didn't care, they just replaced damaged bezels with new ones, as you might expect.