Pocket Watch Movement

J!m

Veteran and General Yakker
Joined
Dec 24, 2019
Messages
5,117
Location
Connecticut
#43
FOlex.jpg

Overdue posting of Perry's score.

For future reference, and others out there, Rolex does not plate anything. So, the worn gold from the bracelet is a giveaway. BUT, it is not uncommon for bracelets to be replaced with cheap ones, when they wear out. (Genuine ones cost thousands at the jeweler).

Next is the winding crown. They always have the coronet (Rolex crown logo) on them. But, like the bracelet, there are generic ones which are smooth top, because: expensive. These are usually brass wrapped with a thick "foil" top, be it stainless, gold, white gold, platinum. New stainless anyway (not sure abput precious metals) are made from a single piece of steel. The PM ones may not be only because of the threads needing to hold.

The tube that the crown threads onto (yes they all thread, so if it doesn't...) should be the same metal as the crown. Gold/gold; stainless/stainless.

Bracelet clasp will have information inside like the maker's mark, date etc. This one is sterile.

Crystal is either sapphire (more modern models) or acrylic. Aftermarket crystals of both materials are readily available. Genuine ones cost hundreds if you want to go genuine. Modern (21st century) sapphire ones have a laser etched crown at the 6 O'clock position, which is visible when lit from the side (it's really small). Bear in mind these are also faked on the good fakes... Earlier sapphire crystals do not have a crown, so this should not be a defining detail.

Movement- all are automatic winding except for some very early models, and the "Oysterquartz" models. These latter ones are clearly marked on their dial, and the case style is different than a typical Rolex model. If it's ticking once a second (as opposed to eight times a second), and it doesn't say "Oysterquartz" on the dial, it's fake.

I'm going to pop a battery in this, if I can find one without having to order it in from the parts house, and see if it works.

I will refund Perry's money for return shipping as he has asked it not be returned...
 

George S.

Veteran and General Yakker
Joined
Feb 18, 2020
Messages
2,209
#44
Jim, very interesting. Thanks for the photo and explanation. Is the 8 ticks per second of a genuine Rolex audible to the human ear without any additional tools or equipment?
 

J!m

Veteran and General Yakker
Joined
Dec 24, 2019
Messages
5,117
Location
Connecticut
#45
Sure, if your hearing is good.

In a quiet room I can hear it at arms length. The ETA 2824 also runs at 28,800 VPH, and is very common in many watches. The newer 2892-A2 is the same. This is what Omega used until their Co-Axial came out, which runs at a slightly slower beat rate (I don't recall what it is) and was the first mechanical watch movement with a 10-year warranty.
 

WOPL Sniffer

Veteran and General Yakker
Joined
Aug 10, 2015
Messages
8,512
Location
Minnie-Soda
Tagline
Screw it
#46
View attachment 66982

Overdue posting of Perry's score.

For future reference, and others out there, Rolex does not plate anything. So, the worn gold from the bracelet is a giveaway. BUT, it is not uncommon for bracelets to be replaced with cheap ones, when they wear out. (Genuine ones cost thousands at the jeweler).

Next is the winding crown. They always have the coronet (Rolex crown logo) on them. But, like the bracelet, there are generic ones which are smooth top, because: expensive. These are usually brass wrapped with a thick "foil" top, be it stainless, gold, white gold, platinum. New stainless anyway (not sure abput precious metals) are made from a single piece of steel. The PM ones may not be only because of the threads needing to hold.

The tube that the crown threads onto (yes they all thread, so if it doesn't...) should be the same metal as the crown. Gold/gold; stainless/stainless.

Bracelet clasp will have information inside like the maker's mark, date etc. This one is sterile.

Crystal is either sapphire (more modern models) or acrylic. Aftermarket crystals of both materials are readily available. Genuine ones cost hundreds if you want to go genuine. Modern (21st century) sapphire ones have a laser etched crown at the 6 O'clock position, which is visible when lit from the side (it's really small). Bear in mind these are also faked on the good fakes... Earlier sapphire crystals do not have a crown, so this should not be a defining detail.

Movement- all are automatic winding except for some very early models, and the "Oysterquartz" models. These latter ones are clearly marked on their dial, and the case style is different than a typical Rolex model. If it's ticking once a second (as opposed to eight times a second), and it doesn't say "Oysterquartz" on the dial, it's fake.

I'm going to pop a battery in this, if I can find one without having to order it in from the parts house, and see if it works.

I will refund Perry's money for return shipping as he has asked it not be returned...

That's a mighty fine piece of junk Jim.
 
Top