Titleist ProV1-392?

Today when I was playing a round of golf I found a Titleist ProV1-392, does anyone know what 392 means on the ProV1's?

It's just an older style of Pro V1's.  The 392, means that there are 392 dimples on the golf ball.   I believe these balls were released anywhere from 2000 to 2007.  Here is an old discussion about when they were released.

http://www.titleist.com/teamtitleist/team-titleist/f/5/p/4578/18119.aspx