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Old 9 January 2018, 09:13 PM   #1
1675-David
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Pepsi Insert Red or Blue Back

How to identify without looking at the back?

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Old 9 January 2018, 11:15 PM   #2
Gina Marie
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I look to the top of the 8. If flattened, them likely red back. Not 100% but close. Other way to know is to look at the back:)
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Old 10 January 2018, 12:55 AM   #3
1675-David
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Other way to know is to look at the back:)
;)
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Old 10 January 2018, 05:10 AM   #4
1675-David
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is the flattened 8 the only tell that it's a red back?
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Old 10 January 2018, 05:45 AM   #5
lee fowler
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No I think the 4 has tell tale signs.
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Old 10 January 2018, 06:26 AM   #6
1675-David
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the 4?
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Old 10 January 2018, 06:36 AM   #7
lee fowler
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Yes I think on the Red back insert it is pointed on the inside of the four and on Blue back inserts it tends to have a flat/flatter section in it.
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Old 10 January 2018, 07:13 AM   #8
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Right Lee.
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Old 10 January 2018, 10:47 PM   #9
1675-David
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The insert on my watch has a red back and a little flat on the 4, so on a blue back the flatness is more pronounced?

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Old 11 January 2018, 02:31 AM   #10
1675-David
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This is the same watch but with the insert I swapped out, it is also a red back insert with a pronounce flat bit on the 4... I'm confused

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Old 11 January 2018, 04:35 AM   #11
lee fowler
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This is the same watch but with the insert I swapped out, it is also a red back insert with a pronounce flat bit on the 4... I'm confused

Indeed but the style and thickness of font would put this as a 16750 insert in my opinion. As with all things Vintage there are exceptions and overlaps but you are correct it is very confusing and the easiest way is to look at the reverse and font style. Basically clear as mud!!
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Old 11 January 2018, 06:44 AM   #12
1675-David
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Clear as mud sums it up quite nicely! Thanks Lee for the pointers, I learned something here today.. I think The consensus (2-1) is that the insert at the top of the page has a blue back. We I'll find out in a couple of days when it gets here
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Old 11 January 2018, 10:20 AM   #13
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Clear as mud sums it up quite nicely! Thanks Lee for the pointers, I learned something here today.. I think The consensus (2-1) is that the insert at the top of the page has a blue back. We I'll find out in a couple of days when it gets here
I'd be shocked if it is blue. It looks like a red-back to me.
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Old 11 January 2018, 10:22 AM   #14
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No I think the 4 has tell tale signs.
The 8s are what I look at first. The top hole in the "8" is oval shaped on the red backs. The later red-backs have a round opening in the top hole.
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Old 11 January 2018, 05:26 PM   #15
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The 8s are what I look at first. The top hole in the "8" is oval shaped on the red backs. The later red-backs have a round opening in the top hole.
Yes 100% agree but the OP did ask if there was any other way other than the 8's. I would also say the insert in the first pic will probably be a Red back.
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Old 11 January 2018, 06:28 PM   #16
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Sorry to interrupt the discussion, but trying to learn something here...

Why does it matter if the insert is a red or blue back ?

Thanks for your patience.
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Old 11 January 2018, 06:39 PM   #17
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Sorry to interrupt the discussion, but trying to learn something here...

Why does it matter if the insert is a red or blue back ?

Thanks for your patience.
Blue back would indicate a service replacement insert or a later 16750 insert.
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Old 11 January 2018, 11:36 PM   #18
1675-David
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place your bets Gentlemen! I got the sms an hour ago from the post office, I'll drive into town tomorow to pick it up.
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Old 12 January 2018, 12:05 AM   #19
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To me it looks like a blue back 16750. I’m however not too good with later watches so I could be wrong.

Enjoy your new insert
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Old 12 January 2018, 03:40 AM   #20
sensui
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place your bets Gentlemen! I got the sms an hour ago from the post office, I'll drive into town tomorow to pick it up.
Guessing red with that oval inside the 8.
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Old 12 January 2018, 04:39 AM   #21
1675-David
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Red Back : 4
Blue Back: 1

the tension mounts...
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Old 12 January 2018, 07:56 AM   #22
Tom1675
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i say red but i am still learning... based on shape of the 8 and the 4 seems like a red back.
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Old 12 January 2018, 08:15 AM   #23
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Looks like a late red back to me.
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Old 12 January 2018, 03:54 PM   #24
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Old 13 January 2018, 05:13 PM   #25
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Blue back would indicate a service replacement insert or a later 16750 insert.
Thanks for the explanation !
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Old 13 January 2018, 09:07 PM   #26
1675-David
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too much going on yesterday so I didn't make it to the post office, later to day for sure...
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Old 15 January 2018, 07:05 PM   #27
1675-David
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Looks like Per got it right! I saw this on a local auction site and pegged it as a well kept red back insert, I put a reasonable bid in but as there was so little interest I picked it at a very reasonable price. When I opened the packet this morning the truth was revealed.... a blue back insert
Well just goes to show that the Vintage Rolex world is comprised of nuances and subleties, most of why lie beyond my understanding. The pics below show my new insert beside beside an older red backed insert I have saved in a parts tin. I chose that particular red backed insert as it appears to fly in the face of all the all the pointers received in this thread and also because it's the only one I have...



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Old 16 January 2018, 07:10 AM   #28
roh123
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Tihi
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Old 17 January 2018, 04:08 AM   #29
1675-David
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Tihi
Well done!! But was that a guess, a feeling, a hunch or is there a definitive way to identify a blue or red back insert?
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Old 17 January 2018, 04:35 AM   #30
roh123
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Well done!! But was that a guess, a feeling, a hunch or is there a definitive way to identify a blue or red back insert?
To me the blue color was much of the tell. No doubt it was late but I couldn’t tell how late by the font only.
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