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Wally62 · 3 July 2021, 03:39 AM

Dear All, I'm now to this forum. I'm from Italy and I'm a small Rolex collector. I recently both a 16750 6,6 M Serial number. I'd like to have your opinion about the watch in particular the bezel insert that is blue back. Is it original ? is there any information about the correct timing for watch production with red and/or blue back ? thanks and Regards Valter

Wally62 · 6 July 2021, 02:46 AM

Any feedback ? thanks in advance
Valter

springer · 7 July 2021, 12:09 PM

The insert is later than 1979 - 1980, which is the era for your watch. It should be a red back insert.

Although no one knows for sure when the blue backs started showing up, it would seem to have been around 1984 and possibly earlier based on my experience and ownership of dozens of original 16750 GMTs.

7 July 2021, 12:09 PM	#3
springer 2024 Pledge Member Join Date: Apr 2008 Real Name: jP Location: Texas Watch: GMT-MASTER Posts: 17,194	The insert is later than 1979 - 1980, which is the era for your watch. It should be a red back insert. Although no one knows for sure when the blue backs started showing up, it would seem to have been around 1984 and possibly earlier based on my experience and ownership of dozens of original 16750 GMTs. __________________ Member of NAWCC since 1990. INSTAGRAM USER NAME: SPRINGERJFP Visit my Instagram page to view some of the finest vintage GMTs anywhere - as well as other vintage classics.

6 July 2021, 02:46 AM	#2
Wally62 "TRF" Member Join Date: Jul 2021 Location: Italy Posts: 3	Any feedback ? thanks in advance Valter

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