Help identifying Grandfathers 2915-3

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Hello friends,
I would like to request some help from the enthusiasts here on identifying a watch inherited from my grandfather, who passed in 2017. Some initial photos will be shown below, and description and thoughts will continue in the post. The watch in question is a Speedmaster 2915-3 purchased from Catanach's Melbourne, Australia on 15th January 1963. This was a reputable jeweler of the era. Original box and paperwork is included. The watch was gifted by my grandmother and was worn by my grandfather every day in Melbourne until a debilitating stroke took hold of him in 2015. It has since been sitting in a safe for the past 8 years. My father and I are a little afraid to wear it, though it is greatly admired by us both. This was certainly a special and well-loved watch, and it is time to find out more about it. It has been wound up and is working next to me as I write (we'll see how well it keeps the time...)

Specs below:
2915-3
Movement No. 16649281

Some thoughts on this:
We expect servicing took place at some point, due to the scratched numbers, but I couldn't give you any dates. We expect it has been at least 30 years since last service if this is a case, perhaps much, much earlier.

It's interesting to have a 2915-3 sold in 1963. To our knowledge, this movement was only manufactured in the year 1959. Old stock perhaps? Curiously, we do not see a Base 1000 on the bezel. Any ideas on why this might be? To our knowledge the original bezel was never replaced. Is this a mish-mash of different years and sold in '63? Is this uncommon? Hmmm.
Bracelet should be totally original, but numbers are included, and any insight would be greatly appreciated on this too.

What you can help us with: Your thoughts on the lack of Base 1000 bezel, thoughts on the scratched numbers- does this indicate servicing? Thoughts on condition, rarity and possible value of this Speedmaster, and what steps we should take to ensure the value and condition of this beauty?


Thank you all for your time. My father and I look forward to hearing your insights!
Best regards,
Peter

I'll include all photos taken below. Please excuse the double-ups.

 
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🍿I think you know everything about this watch...

But the price with the wrong bezel, id say is around 30-35k. That is head only and not factoring in the bracelet.
 
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So you said you needed help identifying this watch? 😕 Why not post an asking price and get it over with…:whipped:
 
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Yes, one of the main problems is the bezel. The only other 2915-3 models I have seen have a "Base 1000" written after the Tachymeter. I'm curious if anyone knows about this. Was it common for this era, or is it likely it has been replaced? I'm not sure what's going on in that department and was hoping to gain some insight if anyone knows about this era of Speedmasters.
 
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And no, I don't know everything about this watch, only what I wrote here.
 
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🍿I think you know everything about this watch...

But the price with the wrong bezel, id say is around 30-35k. That is head only and not factoring in the bracelet.
Thank you for the thoughts, Foo2rama. Do you think this is the wrong bezel?
 
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Thank you for the thoughts, Foo2rama. Do you think this is the wrong bezel?
It’s a post 1971 bezel so yes. Although I think it’s actually post mid 80’s.
 
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It’s a post 1971 bezel so yes. Although I think it’s actually post mid 80’s.
Thanks again for the insight. That's a bit of a shame but confirms my suspicions.
 
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Besides the wrong bezel also the crown is a later replacement...

Most probably these parts have been replaced during a service. The bracelet may also have been added later, its a newer model/reference.
A CK 2915-3 should have a 7077 or 7912 bracelet.
 
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Ok wow. I love the full set with box and documentation. Such a precious family piece.
 
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Besides the wrong bezel also the crown is a later replacement...

Most probably these parts have been replaced during a service. The bracelet may also have been added later, its a newer model/reference.
A CK 2915-3 should have a 7077 or 7912 bracelet.
Thank you for your information. Good things to be aware of.
 
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It’s a great set and heirloom.

As above, the bezel, crow and bracelet are not original. In fact the bracelet is for Speedmaster Professionals which have 20mm lugs whereas yours is a 19mm lug, pre-professional. The bracelet is dated 4th quarter of 1970 so it’s reasonable to assume it was added c.1971 or 1972 during a service, at which point the bezel and crown were also likely replaced.
 
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You need a movement service. No matter what you want to do with it. In the past during a service , bezel, crown ,crystal and possible the pusher base have been replaced, which was common then. The correct, used bezel today will cost you around A$ 10.000. And the Band and case urgently need a cleaning bath. Do not send the watch to any Watchmaker for a Mvmt. Service. If you need help, send me a PM. I'm in Coffs Harbour and we have serviced many in the last 30 years. Note the Mvmt number, take front and back pictures and get an EoA from the factory. 2915-3 have a few holes in the factory records.... They will refund you if that is the case. If you want to sell it, it's not a good time now. Wear it and wait. Kind regards. Achim
 
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Very nice watch. 🥰 I would have love to have such a watch in my family.
David and Achim are right IMO. You should listen to them.👍

Enjoy it!
 
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What a fantastic heirloom. It’s a very honest example worn and used by your grandfather and serviced when needed, hence the replaced parts as noted above, but these ‘wrong’ parts are part of the watches history and it is exactly how your grandfather wore it. I love it as it is.
What do you want to do with it? If you want to sell it the best advice is to do nothing, not even clean it. Collectors love a barnfind like this. If you want to keep it and maybe occasionally wear it, you should get only the movement serviced and replace the gaskets, but be sure to get recommendations on suitable watchmakers here first.
Only us pedantic collectors would think about sourcing the rare and expensive parts to make it all original, but if it was our grandfathers watch I doubt most of us would change a thing.
 
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Thank you very much everyone for your kind words and useful feedback. I will take all of this into consideration. I have learned a lot! Cheers
 
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I think this will be staying in the family for a while, I will consider having this serviced after some research if I decide to daily drive it