Hi Guys, recently bought a original vintage crown with the correct logo for my 105.003 or 145.012.
Unfurtunately it seems like that it won´t fit on the case tube of either of these watches because the hole on
the backside of the crown is too small.
According to the seller it was sold as a crown for the 2998 so my question is if there is a difference in tube size?
and if the tubes are interchangeble.

Thanks for helping me out

 

the crown came from the bayPurchases made through these links may earn this site a commission from the eBay Partner Network
Both watches were i tried the crown on had newer replacement crowns. But i will measure the tube and come back

 

First... are you sure that external misures are properly for speed ?






Ciao, Gino

 

I will also measure this, but the size is almost the same as the replacement

 

I have only had a problem once on a 145.012 case marked SP with one of my real vintage or modern big speedmaster crowns with old logo. I was not sure if the SP case had a different crown tube(omega or generic)
Was it one of my crowns which you purchased? (*english*auctions*) If it was you are welcome to return it. If not I have a crown tube you can have but I would not recommend changing the tube if it is a stock Omega one.
Thanks Mick

 

Michael, i didnt buy it from you.

@ the rest of the gang I measured the tube of my 145.012 67 SP and the Case Tube measures 2,42mm in diameter.
The Crown is 6.67mm in Diameter and 3.82mm in height, which is quite the same size as Gino's Crown.
The backside looks exactly like the right one on Gino's picture.

Hope this helps.

 

I believe the "SP" has a different tube and pushers, SP stands for special poussoirs meaning the pushers are a improved type, the crown pushers could be improved too.
I got that info from speedy4ever so credit to him.
Thanks Mick

 

Here is a picture of my crown, seems like the inner diameter of the Case tube is not wide enough to take the crown tube after the step

 

Hi Mick,

regarding the pushers, yes, but for crown tube, no idea unfortunately...

 

Hello Speedyforever. The SP I owned was the only watch I could not get my crowns to fit so that could be the case (different crown and tube too)
Thanks Mick

 

So what to do? try another case tube?

 

Sorry Guys... the SP has certainly improved pushers but the same crown tube as the other speedies . The tube measures 2,45mm in diameter in 145.012-67 SP , in 105.033-xx , in 2998-xx ..... and so on .

Here a pic of a 145.012-67 SP vs a 105.003-63 ...


as you can look, pushers are different but crown tube NOT , 2,45mm in diameter for both

and obviously crowns with stems are interchangeable from one speed to another



Ciao, Gino

 

Not too complicate this thread in any way, and knowing nothing is 100% with Omega, from what I have been told by other members here, is that perhaps some 145.012 speedy things may have changed in regards to the logo on the crown and perhaps this change effected the tube size. Now not too sure if the flat foot logo was an option for the 145.012 as this was the latest model...prior to this model perhaps the speedy came with the flat foot logo..the only reason I am posting this is to say that maybe since the logo changed so did the tube size, have a look here:

sent to me by another member who was generous and kind and one of best answers I have seen and well thought out along with some proof...I want to thank he again for his time with such a great reply!


But I have to express what I have noticed about the
145.012-67 crowns. Most of the '67's I see have
a different crown than the one he shows which was used
on Speedmasters preceding the 67. I believe the 32 (might be off 1 or 2 teeth)
tooth crown is correct for '67. Or maybe even both are correct.
Here's some of the reasons I came to that conclusion.
This is not conclusive evidence of course, just my
observations. Would love to hear more opinions.
Here's one of Gianvittorio's (LONG time Italian Speedmaster Collector) '67.
View attachment 35389

Here's a 145.012 instructional showing same crown whereas the 105.012
instructional shows the earlier crown, and a different diameter (105.012 is on bottom)
View attachment 35390 View attachment 35391

Here's one that was said to be in NOS condition bought from the original owner 145.012 67
http://www.corrvintagewatches.com/detail.php?productId=149#



So, I think this would be right according to the picture...however nothing is proven, but could it be with the logo being changed perhaps the tube size changed as well. I think I may have found this crown shown above, but I am still not 100% sure if both are right or just the one pictured, I believe both could be right, or are people thinking the flat foot crown goes with the flat foot logo on the dial and then they hunt for it to replace it to make it appear original....seems a stretch but would love to hear more. Again sorry not to complicate the thread, just hoping to see if this makes any sense or not...and to keep hearing some thoughts. Cheers guys!

 

Pasbru - 24 teeth for an original crown; 32 for modern crowns.

 

emmmh....

basically there are 3 type of crowns for speedies (there are not only these but these are mainly)



from left to right :

narrow Omega flat feet, 6.75 mm 24 teeth, on all 321 and also 145.022-68

wide Omega angular feet, 6.75 mm 32 teeth, on 145.012-67 to 145.022-68

wide Omega angular feet, 6.50 mm 24 teeth, on 145.022-69 forward


the most important thing is that on all 321 and 145.022-68 the diameter is 6.75 mm and the thickness is 3.8 mm


Ciao, Gino

 

Thats something new ... so the flat Omega crown could be original for my 145.012, will have to measure the size again.

I really have to say that i am learning quite a lot a the moment regarding Speedys .... thanks for that.

But what about the crown ???? It also didnt fit my 105.003 from 65 or my 165.024 from 67, do i have to assume that
it wasnt made for a Speedy or do both watches have the wrong tubes?

 

Bumping a 5yr old thread - but I had the same question recently and wanted to share my observation

See below - 3 replaced cases.
145.022, 105.003, 105.012

I clearly see differing tube sizes.

 

Measurements por favor?

 

Ahhh - I’ll have to get to that on the weekend. From memory they were close on the outside edge, but tough to measure the inside diameter.