what are the usual markings to check when confirming if a 7s26 movt is authentic? nt.

what are the usual markings to check when confirming if a 7s26 movt is authentic? nt.

Joined: December 3rd, 2007, 9:44 am

April 4th, 2009, 3:11 pm #1

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You can pick your friends. You can pick your nose... But you can't pick your friend's nose!!
Last edited by big-e-294 on April 4th, 2009, 3:13 pm, edited 1 time in total.
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Joined: August 19th, 2008, 4:54 am

April 4th, 2009, 3:17 pm #2

- 7s26A or 7s26B on the rotor
- Seiko stamped on the main plate near the balance
- the shape of the balance jewel shock system

But there are legitimate movements out there without one or the other of the markings.

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Joined: December 3rd, 2007, 9:44 am

April 4th, 2009, 3:22 pm #3

coz' mine doesn't have it.

i will check the shape of the balance jewel shock system.

Thanks!

Ben

You can pick your friends. You can pick your nose... But you can't pick your friend's nose!!
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Joined: August 28th, 2006, 9:33 pm

April 4th, 2009, 3:53 pm #4

what does the shock system look like?? nt
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Joined: August 19th, 2008, 4:54 am

April 4th, 2009, 4:33 pm #5


Note: This one doesn't have the 'SEIKO' stamped on the plate just below and to the left of the bottom red arrow.

The Chinese fake 7s26 looks like this...


This is often one of the first and easiest signs of a fake.

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Joined: April 9th, 2003, 4:25 am

April 4th, 2009, 4:54 pm #6

can you elaborate why you think the bottom one is a fake?
1. the shock protection used is ok.
2. the shape of the plate seem to be ok.
2. on the older 7000 series autos, the only Seiko name is on the top plate. main plate has only a few numbers between the top plate and the balance.on your picture it's hard to tell if there are markings below the rotor.

Rob T
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Joined: January 20th, 2009, 8:44 pm

April 4th, 2009, 5:29 pm #7


Note: This one doesn't have the 'SEIKO' stamped on the plate just below and to the left of the bottom red arrow.

The Chinese fake 7s26 looks like this...


This is often one of the first and easiest signs of a fake.

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jewel on balance cock looks different nt
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Joined: March 10th, 2007, 6:43 pm

April 4th, 2009, 5:44 pm #8

- 7s26A or 7s26B on the rotor
- Seiko stamped on the main plate near the balance
- the shape of the balance jewel shock system

But there are legitimate movements out there without one or the other of the markings.

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I just happen to have a "Fako" movement here on my bench so I thought I'd point out some of the differences to help identify them. Even though the Seiko 7s26 is a stamped out movement it's still far superior to the fako's cheapness as the following will show!

Real Seiko rotor...Font is tight & straight

Fako Rotor..Font is spaced & almost italic

Note that Fako pallet bridge has only 1 screw and is very large..

Note the Real Seiko pallet bridge has 2 screws and is smaller (some even say "seiko")

Note that the Real Seiko has machined reduction gears..

The Fako is cheap stamped metal...


One other thing I noticed about this Fako..Look at the crazy washer like thing that hold the dial
peg!

I hope this helps out??

I make Watches...From the Dead

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Joined: September 24th, 2005, 10:02 pm

April 4th, 2009, 5:55 pm #9

..
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Joined: August 19th, 2008, 4:54 am

April 4th, 2009, 5:57 pm #10

can you elaborate why you think the bottom one is a fake?
1. the shock protection used is ok.
2. the shape of the plate seem to be ok.
2. on the older 7000 series autos, the only Seiko name is on the top plate. main plate has only a few numbers between the top plate and the balance.on your picture it's hard to tell if there are markings below the rotor.

Rob T
I got the bottom picture from here...
http://www.ranfft.de/cgi-bin/bidfun-db. ... China_7S26

The Diashock system on the 7s26 doesn't have the 3 lobed spring.

The shape of the plate when disassembled can be seen to be different.

We are discussing the 7s26 and I have examples with and without the 'SEIKO' stamp on the main plate.

If you look closer at the two pictures, you can also see that the balance bridges are not exactly the same in shape either.

Lew B. has also hi-lighted more of the physical differences besides markings.

These fakes are not actually very faithful copies as most of the parts won't interchange.

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