Need Guestbook Pen Suggestion

These are the pens I bought for my photo book guestbook. I bought them because a seller on Etsy was selling them to go along with her thumbprint tree guest book so I figured they were the type of pens I wanted. They say they're waterproof, fade resistant, no smears, feathers or bleedthrough on most papers

http://www.amazon.com/gp/product/B0008G8G8Y/ref=oh_details_o02_s00_i00?ie=UTF8&psc=1

You need archival quality pens. This is what we used, I think: http://www.amazon.com/Sakura-30061-3-Piece-Micron-Blister/dp/B000XAORIS/ref=sr_1_9?ie=UTF8&qid=1402922744&sr=8-9&keywords=archival+pens

The Sharpie may not smudge but it will not stay looking as nice for a long period of time.

Sharpie has a red hue in direct light. Graphite will last forever, but it will smuge if people rub on it too much while writing. Microns are good, but they are named for their size (small writing point) which may be good or bad depending on the size of your mat. India ink is fantastic but can be messy. Just find a good size pen that says archival and quick drying.