For absolutely accuracy it is on speedmaster 101 but I am sure William can point you to it, in case here it is.
So, before anyone conjures up some wonderful myth about these dials they are mid/ late 60's service replacements, I have a friend who has a one owner 2998 which had a movement replacement and dial replacement in 1967, this dial was fitted then including a NOS 1967 movement and he has the receipts to back it up. I would also add it has a complete Omega service history for its entire life and the only time it mentioned a dial and movement change was 1967, which the serial number on the movement corroborated and matched to the records
I did quite a lot of research for him and concluded that it is a service dial (to an extent) but so few have been seen that I came to the conclusion it was produced for a very short space of time in the late 1960's, sure I could be wrong and welcome further views but I have seen evidence that one of these dials was fitted in 1967.
I don't believe this is any different to a blue dial service dial or a grey service dial (other than the obvious value), you can chose to agree or disagree I really don't mind but there are as many of these I know of as there are blue metallic service dials, people place a value on the blue service dial because it is 'different' this is no less different or rare.
I am not suggesting that it should increase the value of an ed white but I certainly wouldn't be put off buying one with one of these dials
Thanks Tom