Modern Daytona Questions

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Dear All,

Since most AD stop playing hard to get on this thing, a regular guy like me can start looking for one. Few questions for you:

1. Could you help me understand the difference between old and new clasp of SS Daytona?
I think I saw new one but I might be wrong. Heck, I don’t even know what is the old one looks like.
Pictures to compare would be nice.
2. I should expect to see the newer clasp from “M” series, right?
3. Beside clasp, is there any different on the bracelet?
4. From which series that should I expect to see the “ROLEXROLEXROLEX” engraved on the chapter ring?

Thanks in advance
Tom