according the best experts of the preV and preA period concerning the non matching and matching dial : they can only be seen on the 201/A and 202/A.
i quote Mister Dirk G.
"I invented a couple of references in 2001, including 'pre-A' (no-one else had ever noticed the differences between the T-SWISS-T and regular A/B series dials at that time) and 'non-matching dial' vs 'matching dial'. The non-matching dial reference was much easier to say than "5218-201/A and 5218-202/A (small matriculation numbers only for the latter, of course - first batch of 90 pcs) early production watches where the varnish on the dial caused the underlying Tritium to turn blood(y) orange..."
That's why I make the rules here.
You're 99% correct - The term "non matching dial" is STRICTLY reserved for 5218-201/A and 5218-202/A early production watches where the varnish did not properly protect the underlying Tritium from aging...
or better 'where the varnish caused the underlying Tritium to turn blood-orange within weeks'
(see picture of that MM).
All the rest have just nicely aged tritium of the indexes on the dials... (5218-201/A, 5218-202/A, 5218-203/A, SlyTech Sub, OP6500 and OP 6502 pre-A and OP6502 A+B series)... but you're not allowed to call that 'non-matching'.
The Supreme Court on this has spoken,
So let me share with you some pics of a preA 002 .
The dial turns to orange like the non matching preV even the hands .
Is it simply an amazing aged tritium of the indexes and the hands ? !
What i was saying about minutes hand is the paint that i can see on the edges.
Hands are as if they had been "painted" with the same unique color. I mean if it was patina, the excess tritum on the edges may not have took the same patina as on the center of the hands ?
Whatever we call matching or non matching, the hands never take the same patina as the indexes. Maybe because of the small amount of tritium paint on the back compared to the indexes and their curve design and tritium filled in. I also saw whitish/cream at dark and greenish when at the sun.
For sure this is an unique configuration in my small book. This is a pre360
Here are some other close up of my preA1 and what i always saw on preV or preA. But i'm sure you already know that
Is it true that keeping a tritium watch in the dark without light causes it to patina....
February 26 2012, 1:07 PM
faster and more extreme? I've heard this a few times. It could be possible that this PreA 002 spent the first few years of it's life tucked away in a closet or a safe? Anyhow, that is a gorgeous piece!!!
Re: Is it true that keeping a tritium watch in the dark without light causes it to patina....
February 26 2012, 8:28 PM
hi Kevin ,
Your theory is a possibility.
Because my English is bad , i give you the explaination about this .
I found this on P.com and saved it to my archives.
"A heavily patina'ed tritium dial will lose maybe some, or even all it's color if exposed long enough to sunlight. This process is called photobleaching. Basically, the molecules that produce the color you see are broken down by the sunlight and become basically white in color. The only real way to preserve the color is to keep the watch in the dark. "
"PS. Humidity is not really a factor in producing or removing the patina (other then the corrosion you see on the metal parts of a watch). The patina comes from the conversion of white phosphorus (which is a main ingredient in the tritium paint) to red phosphorus, which is partially a photolytically driven process. So the same thing that helps create the patina will eventually destroy the patina. Funny how nature works, huh? "