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Alexmj · 19 January 2021, 03:25 AM

Hello everyone wondering if anyone here can answer this question for me ive done some research and found nothing. I have a 2020 day date yellow gold and on the back case by the lug it says au750 I seen a rose gold day date and the back case just says 750.. does anyone know why? Thank you

whitelightning · 19 January 2021, 07:00 AM

The periodic table symbol for gold is "au".

Alexmj · 19 January 2021, 10:20 AM

Quote:

Originally Posted by whitelightning

The periodic table symbol for gold is "au".

But why does mine have au750 and others just say 750

Benzsiam · 19 January 2021, 11:35 AM

au750 = 18 karat gold

peterpl · 19 January 2021, 03:10 PM

The DD40s I've seen only have 750 engraved on the rear of the lug.

Both of mine also just say "750" and NOT "Au750"

Post a picture. Maybe the new 2020 dated ones have "Au750". My DD40s are dated 2016 and 2018.

peterpl · 19 January 2021, 03:19 PM

Here are pics of both my DD40s. One rose gold and one yellow gold.

dcash0615 · 19 January 2021, 03:28 PM

Rolex has started stamping au750 on their gold pieces as one of the four hallmarks under the lugs.

peterpl · 19 January 2021, 03:30 PM

Quote:

Originally Posted by dcash0615

Rolex has started stamping au750 on their gold pieces as one of the four hallmarks under the lugs.

Which year did that start? I also have a YG 116618LB dated August 2020 and it also only shows 750 not Au750.

dcash0615 · 19 January 2021, 03:40 PM

Quote:

Originally Posted by peterpl

Which year did that start? I also have a YG 116618LB dated August 2020 and it also only shows 750 not Au750.

I just started seeing it on gold pieces in the past 3-4 weeks. I’m thinking Rolex started adding it in late 2020 production.

Sothy · 20 January 2021, 12:10 AM

Definitely some still at ADs with just 750 (yg ones I mean). Of course, who knows when they got there.

I was wondering, I also noticed that some YG DDs also didn’t have the extra crown at 6 o’clock. Does anyone know if Rolex is still delivering DD40s without the extra crown (mk1 dials i guess)?

Thanks

Alexmj · 20 January 2021, 02:13 AM

I just wanna make sure it normal.. because seeing mine has it and others dont is making me alittle nervous because i did not buy it from an AD. Its dated november 2020

brandrea · 20 January 2021, 02:15 AM

Quote:

Originally Posted by dcash0615

Rolex has started stamping au750 on their gold pieces as one of the four hallmarks under the lugs.

Interesting observation Dave ... didn’t know that

Alexmj · 20 January 2021, 02:28 AM

Quote:

Originally Posted by dcash0615

I just started seeing it on gold pieces in the past 3-4 weeks. I’m thinking Rolex started adding it in late 2020 production.

Mine is dated november 2020

RJRJRJ · 20 January 2021, 02:35 AM

Some of the ones David SW has on his site say Au750. Example: https://davidsw.com/shop/watch/rolex...hocolate-dial/

Sothy · 20 January 2021, 04:33 AM

When you say dated Nov 2020, do you mean sales warranty card dated nov 2020? I think with random serial numbers that one can’t confirm manufacturing dates? (Which makes me wonder about new day dates with mark 1 dials.)

Alexmj · 20 January 2021, 04:46 AM

Quote:

Originally Posted by Sothy

When you say dated Nov 2020, do you mean sales warranty card dated nov 2020? I think with random serial numbers that one can’t confirm manufacturing dates? (Which makes me wonder about new day dates with mark 1 dials.)

Yes thats what it says on the warranty card

Vince KSA · 20 January 2021, 09:21 PM

It's not just Day Dates and indeed not just YG & RG, my smurf 12 months old, also has the 750 stamped on the back, never realised this myself until I read this thread. Every day is a school day, as they say.

SM11.jpg

Cambo · 20 January 2021, 10:02 PM

My WG DD which I purchased from an AD two weeks ago has Au750

Alexmj · 21 January 2021, 04:32 AM

Quote:

Originally Posted by Cambo

My WG DD which I purchased from an AD two weeks ago has Au750

Ok so i guess they did start doing the au750 on newer watches.. im just paranoid lol because i dident purchase from an AD

dcash0615 · 21 January 2021, 06:58 AM

Picture of underside of lug on a rose gold GMT that I just picked up last week.

19 January 2021, 03:25 AM	#1
Alexmj "TRF" Member Join Date: Jan 2021 Location: New york Posts: 23	Day date markings Hello everyone wondering if anyone here can answer this question for me ive done some research and found nothing. I have a 2020 day date yellow gold and on the back case by the lug it says au750 I seen a rose gold day date and the back case just says 750.. does anyone know why? Thank you

19 January 2021, 11:35 AM	#4
Benzsiam 2024 Pledge Member Join Date: Mar 2015 Location: USA Watch: Rolex/AP/PP/ALS Posts: 6,000	au750 = 18 karat gold __________________ Rolex: 116621, 126333, 126711CHNR, 114060, 116500LN White, 126660 JC, 126710BLNR, 126710BLRO, 116610LV, 126610LN, 126610LV, 116508 YG Green Dial, 124300 Turquoise, 126719BLRO Meteorite dial, 228235 Olive dial ,126755SARU, 116505 RG Black dial, 326934 Blue Sky D. AP: 15451ST Blue, 15500OR w/Bracelet, 14790SA, 14790BA, 26022BC(Salmon) PP: 5524R, 5712G, ALS: Time Zone 136.032, Cartier: WGSA0030, WSSA0061, YG Oct. 2965, Carree 2961, YG Carree, Tank W5000156 Breguet: 7137BA, MontBlanc: 109996"

19 January 2021, 03:28 PM	#7
dcash0615 2024 Pledge Member Join Date: Jan 2007 Real Name: Dave Location: CA Watch: es Posts: 4,394	Rolex has started stamping au750 on their gold pieces as one of the four hallmarks under the lugs. __________________ Instagram @dcash0615 2FA security active

20 January 2021, 09:21 PM	#17
Vince KSA "TRF" Member Join Date: Jun 2018 Location: Saudi Arabia Watch: Daytona 116500LN Posts: 752	It's not just Day Dates and indeed not just YG & RG, my smurf 12 months old, also has the 750 stamped on the back, never realised this myself until I read this thread. Every day is a school day, as they say. SM11.jpg __________________ Patek Philippe 5168-G (Aquanaut Blue) - Rolex Daytona 116508 Green Dial - Rolex Submariner 116619LB ( Smurf) - Panerai 1116 (Platinum 1 of 70) - Panerai 932 Radiomir 47mm - Panerai 968 Submersible "Bronzo" - NOMOS Glashutte Club 453 Campus - SS Omega Seamaster Orange - Porsche Design GMT - G Shock Solar - Tag F1 Circa 1995 - J W Benson Circa 1950. ( F.PJ. Complication on order 👍🏼)

20 January 2021, 10:02 PM	#18
Cambo "TRF" Member Join Date: Dec 2012 Real Name: Cam Location: North of 49th Watch: Rolex/Grand Seiko Posts: 1,933	My WG DD which I purchased from an AD two weeks ago has Au750 __________________ 16618 126710BLRO 116500 LN (White) 228235 228239 SBGK002

19 January 2021, 07:00 AM	#2
whitelightning "TRF" Member Join Date: Feb 2014 Real Name: Don Location: Texas Hill Countr Posts: 122	The periodic table symbol for gold is "au".

19 January 2021, 03:10 PM	#5
peterpl Banned Join Date: Aug 2012 Location: . Posts: 6,692	The DD40s I've seen only have 750 engraved on the rear of the lug. Both of mine also just say "750" and NOT "Au750" Post a picture. Maybe the new 2020 dated ones have "Au750". My DD40s are dated 2016 and 2018.

19 January 2021, 03:19 PM	#6
peterpl Banned Join Date: Aug 2012 Location: . Posts: 6,692	Here are pics of both my DD40s. One rose gold and one yellow gold.

20 January 2021, 12:10 AM	#10
Sothy "TRF" Member Join Date: Aug 2018 Location: Varies Posts: 339	Definitely some still at ADs with just 750 (yg ones I mean). Of course, who knows when they got there. I was wondering, I also noticed that some YG DDs also didn’t have the extra crown at 6 o’clock. Does anyone know if Rolex is still delivering DD40s without the extra crown (mk1 dials i guess)? Thanks

20 January 2021, 02:13 AM	#11
Alexmj "TRF" Member Join Date: Jan 2021 Location: New york Posts: 23	I just wanna make sure it normal.. because seeing mine has it and others dont is making me alittle nervous because i did not buy it from an AD. Its dated november 2020

20 January 2021, 02:35 AM	#14
RJRJRJ "TRF" Member Join Date: Aug 2011 Location: USA Posts: 3,495	Some of the ones David SW has on his site say Au750. Example: https://davidsw.com/shop/watch/rolex...hocolate-dial/

20 January 2021, 04:33 AM	#15
Sothy "TRF" Member Join Date: Aug 2018 Location: Varies Posts: 339	When you say dated Nov 2020, do you mean sales warranty card dated nov 2020? I think with random serial numbers that one can’t confirm manufacturing dates? (Which makes me wonder about new day dates with mark 1 dials.)

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