Welcome aboard.
That's an early model Chronomat dating from somewhere between 1984 and 1996 - probably the latter of that range if it was bought new in 2001.
http://www.breitlingsource.com/watch_de ... at_73.htmlIt should be serviced every 5 years or so, and cost is dependent on where you're based in the world. The Breitling website (
http://www.breitling.com) details the service costs under the "Service" tab. Here in the UK a mechanical chronograph full service is £530, or an interim service is £175. However, parts will cost more.