Digital BW, The Print

Hi,

Does anyone know if it's possible to sign Fuji Crystal Archive Matte
with pencil?  The reason I ask is that it's not really matte but has a
slight sheen to it.  If it is possible, any pencil recommendations?

I realize this question isn't directly related to the printing of
black and white images (even though the prints in question are black
and white...), but I know everyone here is really knowledgeable and I
couldn't really find anywhere else to post it.

Thanks,

Brian
http://www.brianchapmanphotography.com