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lloydXchristmas · 19 April 2017, 11:55 AM

Hello all,

Sorry for what may be an asinine post, but I've seen differing info on dates of manufacture. The watch in question is a Rolex Datejust ref. 1603 serial #366XXXX.

I believe it is 1975?

Thanks in advance.

Ryan

Kingface66 · 19 April 2017, 01:31 PM

Hey, Ryan. Check this chart out for comparison
https://www.rolexforums.com/showthread.php?t=54362

GGGMT · 19 April 2017, 01:47 PM

Approx 1974

Sent from my iPhone using Tapatalk

springer · 19 April 2017, 03:50 PM

Quote:

Originally Posted by lloydXchristmas

Hello all,

Sorry for what may be an asinine post, but I've seen differing info on dates of manufacture. The watch in question is a Rolex Datejust ref. 1603 serial #366XXXX.

I believe it is 1975?

Thanks in advance.

Ryan

Case back date stamps ended during 1972 where you'll case backs stamped up to that serial number range. You'll also find the 3.6 range without case back stamps which to me would indicate 1973. 1972 or 1973 would work for me as the era of manufacture.

MonBK · 19 April 2017, 03:55 PM

1973 works for me, 3523678 - 3741300

swish77 · 19 April 2017, 09:59 PM

Early '70s Rolexes are tough to get exact dates on because of the switch-over to non-dated case backs. I've seen 4.0 mil. serials on case backs dated '72, such as this Sub 5514, which has the serial number and year correctly engraved into the case back. (The 5513 engraving is also correct.)

I've read that Rolex was using up the older dated case backs on later serial numbered watches around this time, hence the difficulty in accurate dating. My 3.7 mil. 5512 also has a '72 case back.

Haywood_Milton · 19 April 2017, 10:58 PM

1974.

lloydXchristmas · 20 April 2017, 08:05 AM

So many different opinions, thank you all for the input!

I could add that it is a Sigma dial, but that may muddy things up a bit more.

19 April 2017, 11:55 AM	#1
lloydXchristmas "TRF" Member Join Date: Apr 2017 Location: Baltimore, MD Posts: 4	Date of manufacture? Hello all, Sorry for what may be an asinine post, but I've seen differing info on dates of manufacture. The watch in question is a Rolex Datejust ref. 1603 serial #366XXXX. I believe it is 1975? Thanks in advance. Ryan

19 April 2017, 10:58 PM	#7
Haywood_Milton "TRF" Member Join Date: Jun 2008 Real Name: Yes, it is ! Location: Cheshire & Mersey Watch: Military issue Sub Posts: 1,319	1974. __________________ Comex:5513,5514,1665x2,16800x2,16600 Mil sub:5517x2,5513x9,5512 Submariner:6536/1x2,5508,5513 PCG u/line & double SWISS (America's Cup),5513 giltx2, 5513 m-firstx2,5513 gloss WGx2,1680 Red,1680 White Mk1 & Mk2 Sea-Dweller:1665 DRSDx3,Great Whitex3 GMT-Master:6542x2 (1 Bakelite),1675x8 (2 gilt), 16750 & SeaKing 116710LN Explorer:1016x6 (1 gilt),5500x3,14270 Blackout, Orange 1655 x4 Milgauss 1019x3 Cosmo 6263 *RNCD DSSD 116660.

19 April 2017, 01:31 PM	#2
Kingface66 2024 Pledge Member Join Date: Aug 2013 Location: The Empire State Watch: 1966 Rolex 5513 Posts: 3,414	Hey, Ryan. Check this chart out for comparison https://www.rolexforums.com/showthread.php?t=54362

19 April 2017, 01:47 PM	#3
GGGMT 2024 Pledge Member Join Date: Aug 2013 Location: Itinerant Watch: 79010sg Posts: 8,044	Approx 1974 Sent from my iPhone using Tapatalk

19 April 2017, 03:55 PM	#5
MonBK Banned Join Date: Nov 2010 Location: Kingstown Posts: 58,281	1973 works for me, 3523678 - 3741300

20 April 2017, 08:05 AM	#8
lloydXchristmas "TRF" Member Join Date: Apr 2017 Location: Baltimore, MD Posts: 4	So many different opinions, thank you all for the input! I could add that it is a Sigma dial, but that may muddy things up a bit more.

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