"Vintage" Rolex...what's it worth.

[RISC601]

Stopped by an authorized Rolex dealer in Marietta/Atlanta area this afternoon. They had a beautiful "used" Rolex in wonderful condition and I bought it.

I was hoping that someone could give me an idea of what it's worth.

Orig. Rolex Design
15200

Stainless Steel
A483825

Based on the information I've been able to find on the web it was manufactured sometime between 1998 and 1999. It is the Oyster Perpetual Date with the blue face. Not an expert, but would be considered an Air King? Obviously it is old enough that it doesn't have the hologram at the 6 o'clock position, but it appears to be authentic.

Just wondering if there is a way to find out what it is worth.

Thanks from a newb Rolex owner.