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1 June 2008, 05:43 PM
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#1 |
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Banned
Join Date: Jun 2008
Real Name: Ross
Location: Chicago Area
Watch: GMT 2
Posts: 324
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Just Purchesed Un Used X serial DateJust Need Information
Hi Newbie here. This is an all SS model 16220 I think its a mid 1991. Watch was never worn still in box with all papers and information. Here is my question How do I tell if I have the plastic or mineral crystal? To me it appears to be a mineral crystal because the surface looks totally flat and I think the plastic crystals have a slight bubble curve to them. Anyone know for sure?
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1 June 2008, 05:46 PM
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#2 |
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Banned
Join Date: Oct 2007
Real Name: Thani
Location: Dubai UAE
Watch: Milgauss 116400 GV
Posts: 2,082
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91 datejusts would have crystals and not plastics
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1 June 2008, 05:49 PM
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#3 | |
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Banned
Join Date: Jun 2008
Real Name: Ross
Location: Chicago Area
Watch: GMT 2
Posts: 324
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Quote:
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1 June 2008, 05:52 PM
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#4 | |
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Fondly Remembered
Join Date: May 2005
Real Name: JJ
Location: Auckland, NZ
Watch: ALL SOLD!!
Posts: 74,320
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Quote:
Simple test......just flick the crystal with the nail of your index finger. A sapphire crystal will make a solid thud-like sound. An acrylic crystal will make a "clackety" like sound.  JJ
__________________
Words fail me in expressing my utmost thanks to ALL of you for this wonderful support during my hour of need!!  I firmly believe that my time on planet earth is NOT yet up!! I shall fight this to the very end.......and WIN!! |
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1 June 2008, 06:01 PM
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#5 |
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Banned
Join Date: Jun 2008
Real Name: Ross
Location: Chicago Area
Watch: GMT 2
Posts: 324
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Oh good im glad. I had an earlier Datjust that I sold 10 years ago with a plastic one and I used to scratch the heck out of it.
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1 June 2008, 06:21 PM
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#6 |
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2024 ROLEX DATEJUST41 Pledge Member
Join Date: Nov 2006
Real Name: Eddie
Location: Australia
Watch: A few.
Posts: 36,927
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Lick it. If it feels cold its a sapphire if it feels hot well.......it's not.
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E 
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1 June 2008, 09:43 PM
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#7 | |
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"TRF" Member
Join Date: Apr 2007
Real Name: Bo
Location: Denmark
Watch: Rolex, of course!
Posts: 22,436
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Quote:
 That's JJ's "Sheep Test" you're referring to there, mate! 
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With kind regards, Bo LocTite 221: The Taming Of The Screw... |
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1 June 2008, 11:51 PM
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#8 | |
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"TRF" Member
Join Date: Jan 2008
Location: Mississippi
Posts: 444
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Quote:
/Only reason I didn't do it was because I know mine is sapphire
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And I say, "Hey, Lama, hey, how about a little something, you know, for the effort, you know." And he says, "Oh, uh, there won't be any money, but when you die, on your deathbed, you will receive total consciousness." So I got that goin' for me, which is nice. --Carl Spackler in Caddyshack |
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1 June 2008, 11:58 PM
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#9 |
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Banned
Join Date: May 2005
Location: USA
Posts: 275
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Hi, a "X" serial is a 1991 yr. mfd. watch, Rolex changed from plexi to crystal in 1977.
So your watch surely has to be crystal. |
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2 June 2008, 12:02 AM
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#10 | |
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Member
Join Date: Mar 2008
Real Name: Barry
Location: Acworth, GA USA
Posts: 622
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Quote:
My 1986 TT mid size DJ was advertised at the time as being one of the first Rolex models with sapphire crystals, even before the full size DJ. |
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2 June 2008, 03:26 AM
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#11 | |
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Banned
Join Date: Jun 2008
Real Name: Ross
Location: Chicago Area
Watch: GMT 2
Posts: 324
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Quote:
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