SuitbertW
2411
I'm sure, generally speaking you're right.....
....when you say "....I thought Patek no longer allowed dial exchanges....." - that's also what I know as general policy.
Though, one never knows if there are some very special cases......
The "purely collectors perspective" - that's a bit more difficult IMO. Of course originallity is king - but if there was an "authorized" dial change, let's say some 10 or 15 years ago, which result in something well documented and hmmmm, almost unique.
I'm not sure this would sometimes be even more interesting for some collectors.
A dial change is a whole different story compared to a refinish/redial - and as I tried to pint out, even among different "refinish" dials can be a extremely huge gap.
I'll have to browse my archives a bit for some examples - it's a very interesting field IMO and soemthing extremely important
for the vintage collectors. Terminology is another problem - it can be very "funny" if a (poorly refinished) dial is called "original" by the seller - and if argued about it he admits "yes, of course it's refinished, but it's still the original dial...." 
Best regards
Suitbert
Dial Exchange vs Redial
By: Rollie : October 12th, 2007-16:21
Guys, Here is a somewhat esoteric but real problem. Let's assume you bought a 3970 WG from Patek with a "silver" dial, but you wanted a "black" dial. So you asked Patek if they would exchange the dial. They say yes and it goes back to Geneva and comes bac...
Hello, Rollin,....
By: SuitbertW : October 14th, 2007-05:44
as for your first question, it's clearly a "dial exchange" on "customers request" as you may sometimes find it described (auction catalogs, etc...). Normally a "redial" would mean a "restored" or "refinished" dial. There are no further technical definitio...
Enhanced dials
By: autowind : October 14th, 2007-06:31
From a purely collector's perspective, a refinished or "enhanced" dial will make the watch less valuable, as it is no longer "original." And again, I thought Patek no longer allowed dial exchanges that might create a "unique" watch. Would like to know if ...
Thanks for the replies
By: Rollie : October 14th, 2007-09:33
Dear Guys, Thank you so much for all your replies which were quite insightful. I hope I din't give anyone false hopes with Patek doing dial exchanges on 3970s. My question had more to do with dial exchanges on vintage annual and perpetual calanders - spec...
Dial swapped.
By: mpalsal : October 18th, 2007-14:56
I own a 3970EP, bought in 1994, originally the watch came with silver dial. I requested it changed to black diamond dial. I have two certificates, one indicating silver, and the other one black with diamon. Do not know if they will still do it or not. All...