klocklind1 Posted April 22, 2010 Report Share Posted April 22, 2010 Hi all! Has anyone here on the forum tried to mount a genuine crown from a datejust on a noob explorer II? Is it the SAME crown on a datejust as it is on a explorer II? Quote Link to comment Share on other sites More sharing options...
jmb Posted April 22, 2010 Report Share Posted April 22, 2010 I believe the Exp II needs a 6mm crown and the Datejust crown is smaller than that... Quote Link to comment Share on other sites More sharing options...
ubiquitous Posted April 22, 2010 Report Share Posted April 22, 2010 DJ crown is 6mm However, the big issue is the actual part number used. If this is going on a rep, you will most likely want a 602-0 crown; there's the 603-0 which comes on the DJ's with sapphire crystals, however the big issue here is that they use the smaller tube intended for the 5.3mm crown. Hence, the I.D. opening where the crown mates to the tube is smaller to match. The 602-0 used a larger tube specific to the 6mm crown. The rep tubes are usually around this size. In fact, I've had some gen 602's fit directly to the rep tube in some cases. Kinda hit or miss in that regard. None the less, if you have to replace the tube with gen in order for the crown to mate, the hole drilled for the tube is likely to be closer in size to the 6020 tube anyways... Quote Link to comment Share on other sites More sharing options...
klocklind1 Posted April 23, 2010 Author Report Share Posted April 23, 2010 DJ crown is 6mm However, the big issue is the actual part number used. If this is going on a rep, you will most likely want a 602-0 crown; there's the 603-0 which comes on the DJ's with sapphire crystals, however the big issue here is that they use the smaller tube intended for the 5.3mm crown. Hence, the I.D. opening where the crown mates to the tube is smaller to match. The 602-0 used a larger tube specific to the 6mm crown. The rep tubes are usually around this size. In fact, I've had some gen 602's fit directly to the rep tube in some cases. Kinda hit or miss in that regard. None the less, if you have to replace the tube with gen in order for the crown to mate, the hole drilled for the tube is likely to be closer in size to the 6020 tube anyways... Thanks a lot for that Ubi! I will try the genuine crown from my datejust if it fits on my noob EX II! Quote Link to comment Share on other sites More sharing options...
ubiquitous Posted April 23, 2010 Report Share Posted April 23, 2010 Assuming you have a gen DJ, is yours a sapphire or acrylic model (e.g. is it a ref 160x, 160xx, 162xx etc)? Quote Link to comment Share on other sites More sharing options...
klocklind1 Posted April 23, 2010 Author Report Share Posted April 23, 2010 Assuming you have a gen DJ, is yours a sapphire or acrylic model (e.g. is it a ref 160x, 160xx, 162xx etc)? It is one of the first with 3135 movement in it and is an X series ( 16220!) from 1991 and it has saffire! The crown is exactly 6,00 mm and looks like a Expl II crown. So it looks like it would fit Quote Link to comment Share on other sites More sharing options...
ubiquitous Posted April 23, 2010 Report Share Posted April 23, 2010 Well, the external dimension is of little consequence; a crown from a 1601 would also be 6mm in diameter. However, it's the inside diameter where the crown mates with the tube that will differ. If you have an X serial 162xx for example, I highly doubt it will fit a rep tube... Quote Link to comment Share on other sites More sharing options...
alligoat Posted April 23, 2010 Report Share Posted April 23, 2010 I'm thinking it would be a 24-603-0 crown which, like ubi says, fits on the 5.3mm tube. The 5.3mm tube is smaller, and takes a 2.5mm tap (smaller hole in the case). The older 24-6020-0 tube takes a 3.0mm x .35 tap. The 603 crown most likely won't fit on your rep case tube and I don't see how you could fit a 5.3mm case tube in your rep case if you have a 3mm hole already. Have you tried to find a 24-602-0 crown? Jewelerstools in Arizona has crowns, but he rarely lists them with the current Rolex terminology. He uses the outdated number system (#26, #29, etc.) and I frankly don't think he knows which crown he is selling, but if he did happen to refer to it as a 602, you might get lucky. DJ crowns should run $15-20, used. Quote Link to comment Share on other sites More sharing options...
klocklind1 Posted April 24, 2010 Author Report Share Posted April 24, 2010 I'm thinking it would be a 24-603-0 crown which, like ubi says, fits on the 5.3mm tube. The 5.3mm tube is smaller, and takes a 2.5mm tap (smaller hole in the case). The older 24-6020-0 tube takes a 3.0mm x .35 tap. The 603 crown most likely won't fit on your rep case tube and I don't see how you could fit a 5.3mm case tube in your rep case if you have a 3mm hole already. Have you tried to find a 24-602-0 crown? Jewelerstools in Arizona has crowns, but he rarely lists them with the current Rolex terminology. He uses the outdated number system (#26, #29, etc.) and I frankly don't think he knows which crown he is selling, but if he did happen to refer to it as a 602, you might get lucky. DJ crowns should run $15-20, used. I saw this site : http://cgi.ebay.com/New-Genuine-Rolex-Watch-Stainless-Steel-Crown-24-603-0-/250486955949?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item3a522f9fad+ Here You can see that it IS the SAME crown for a LOT of datejusts and the Ex II/GMT etc. But the price is HIGH I think! Have anyone bought from here? Quote Link to comment Share on other sites More sharing options...
alligoat Posted April 24, 2010 Report Share Posted April 24, 2010 Milgausser is a price gouger! Yes it is the correct crown, but then you'd have to use the 24-6030-0 tube which is 5.3mm and 2.5mm hole size. The existing hole in your rep case is 3.0mm probably. Capisce? Quote Link to comment Share on other sites More sharing options...
ubiquitous Posted April 24, 2010 Report Share Posted April 24, 2010 Here You can see that it IS the SAME crown for a LOT of datejusts and the Ex II/GMT etc. I give up... I don't know how many times it has to be explained. Go ahead and buy it. Buy it and if it fits, great. If not... Well, I tried... Quote Link to comment Share on other sites More sharing options...
klocklind1 Posted April 24, 2010 Author Report Share Posted April 24, 2010 Milgausser is a price gouger! Yes it is the correct crown, but then you'd have to use the 24-6030-0 tube which is 5.3mm and 2.5mm hole size. The existing hole in your rep case is 3.0mm probably. Capisce? OK thanks now I understand Milgausser is a price gouger! But You can make an offer on his prices ! A genuine new DJ crown is about 90 $ at my AD is that about how much they used to cost ? Quote Link to comment Share on other sites More sharing options...
klocklind1 Posted April 24, 2010 Author Report Share Posted April 24, 2010 Milgausser is a price gouger! Yes it is the correct crown, but then you'd have to use the 24-6030-0 tube which is 5.3mm and 2.5mm hole size. The existing hole in your rep case is 3.0mm probably. Capisce? will this tube fit the noob EX II ? http://cgi.ebay.com/Rolex-President-Datejust-Crown-Tube-MENS-6MM-/330381491032?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item4cec457b58 Quote Link to comment Share on other sites More sharing options...
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