Need your help for my research on Daytona 16520 bezels

[zane16520]

and I thought it was easy!!!
I have nearly 20 16520 bezels on hand from R serie to P serie.
According to general belief, there are 4 'main' series of these bezels but from what I look carefully of these bezels I think there are about 4 'variations' of the 3rd serie.
I want to be sure before I post pictures and my discovery here.
So guys please post all your 16520s and do state which case serial it has (this is important) just the serial letter will do.
I will gather these info and disclose my findings once done.
This will benefit us all to better understand 16520s.
Cheers,
Zane

A few of you have posted your 16520s and it has been a great information.

[AAKVIPER]

but the problem here is that you own all the rare 16520's and no one has any to post...lol.. So you are the leading man on the research team..Your collection is majestic..when I think of sapphire Daytonas.. Zane is the name I hear..you are at the top of the food chain as the 16520 collector.

The Zane 16520 collection below.. Art

[zane16520]

Thanks Arthur but still need to find a lot more 16520 pictures and their serials in order to come to any 'sensible' conclusion. Though I have a general idea of its 3rd serie variation now but the more data the better IMO.
Cheers,
Zane

[Wombat]

Whoa!! Nice collection!