Hi guys,

I'm headed to cybertroncon on Friday and REALLY hoping to get Peter Cullen to autograph my MP Ironhide box if I have the chance to meet him.

Can anyone suggest which pens/colours are the best (and will last) for this kind of thing? I'm thinking a silver felt tip pen (since the MP box is black) but I have no idea so would love to hear others expert opinions/brand recommendations.

Alternatively I'm undecided whether to try and get one of my MP Optimus trailers signed or to get him to sign my Sealed Mint in Box 2002 New Year Special Prime...

Would you use a different pen for these? I see suggestions of a black or blue sharpie online but nothing specific to Transformers plastic/boxes...
If I get the 2002 box signed do I get him to sign on the cardboard or plastic window?

Any and all advice appreciated.