Couple of questions on the pen I have?

[breitlingal]

Hello

First post on the forums.

I was going through my drawer and came across a pen i got for my birthday from a friend of mine. This was back in 2002 I think.
Its a ST Dupont pen but I'm not sure on exact model. Pictures attached. Looking for any info on it?


It will also bring me to second question on how to clean it. It looks like it has been tarnished and I want to see what th best way of cleaning it is?

One impressive thing is that it still writes like new after sitting in my drawer for 12 years.


Thanks

Alex