72hr power reserve = authentic?

[cool-canuck]

I'm in the market for a Daytona and considering ways to potentially authenticate the watch if using an AD was somehow not possible. I was thinking the 4130 movement with the 72 hour power reserve would be hard to replicate given that most watches are in the 40 hour range.

Has anyone heard of a replica with a 72 hour power reserve? Is the 72 hour power reserve perhaps too complicated for a replica? Interestingly i found Seiko makes a spring drive movement with a 72 hour power reserve but the prices of these watches approach Rolex prices.

[SLS]

There are much easier ways of determining whether a Daytona is real or fake than relying on the power reserve. The sub dial layout & configuration are where I look at first if I have any concerns. But if you are asking this, you may want to be dealing with an AD or a trusted seller.
Scott

[JUSTROLEXES]

Buy the seller and not the watch...

[EDDVM]

Pay your AD to pull the back. You can by crono's at costco with a 72hr Pr so I am sure that the china man has figured out how to stuff it in a replica. I have to date never seen a daytona with the proper location of the dial's that has a auto movement. as 99% of them use a vj knock off.

[Ck8]

Originally Posted by EDDVM

Pay your AD to pull the back. You can by crono's at costco with a 72hr Pr so I am sure that the china man has figured out how to stuff it in a replica. I have to date never seen a daytona with the proper location of the dial's that has a auto movement. as 99% of them use a vj knock off.

Please refrain from using slang to describe someone's ethnic origin. It is not that difficult to copy mechanical technology.

[RolexABC]

I think the OP knows that the Daytona has a 72 hour power reserve
The question is whether or not a replica is likely to have the same 72 power reserve

From my understanding of the post you cant take the watch to an AD for one of two reason (or both):

1. The watch has a colourful history
2. There isnt an AD nearby

Either way you will have to find a reputable Independant Watch Specialist. The main reason I say this is for servicing but also to confirm authenticity. Assuming you are looking to keep the watch for while, it may eventually need servicing and you may not want to send it to Rolex. Therefore I suggest you find an IWS to help you purchase and maintain your Rolex.

[cool-canuck]

I guess i should have downplayed the authentication part in terms of buying a Daytona. What i'm really interested in is whether replica watch manufacturers could replicate the Daytona movement since i haven't come across many watches with 72hr power reserves.

One of the main reasons i'm interested in the Daytona is that I wouldn't have to potentially change the time every monday morning since i rarely wear my watch on weekends. I know Jaeger has some 8 day power reserve watches but require manual winding. If i can get a cheap costco one that does the job well then color me impressed.

An automatic with a 72 hour power reserve to me would seem to require a higher level of craftsmanship that a replica watch maker would be willing to create. Besides the Seiko spring drive, are there other movements with such long run-times?

[Tools]

There may be other watches that have a long power reserve, but nobody makes a "replica" 4130 movement...

But.... let me say a few things about "power reserve". It's not there so that you can let your watch set for 3 days (or the weekend) without winding it..

A mechanical watch is designed to work effeciently and accurately at a certain power torque curve. That curve and torque is provided by the mainspring. Since a Rolex is a self-wind watch, it is expected, and the accuracy of your watch depends on, it being fully wound. Or, at least wound up into it's engineered power curve.

You would be doing your watch a disservice and throwing it's accuracy out the window if you let it wind down to low levels on the weekend, then just put it on without winding it fully...

If you are not going to wear your watch for two or three days, find some time each day to fully wind it so that it stays in the upper part of it's designed working parameters. This will provide for consistent timing...