Can someone comment on the archival properties of ink and a no.2 pencil?
I have my family Bible with entries that were penned almost 200 years ago. The entries are still there, the ink is still black. I call that "archival enough."
As for a No. 2 pencil, well IINM pencil leads are made with graphite, i.e., elemental carbon, which is mixed with clay and wax in different proportions to give the various hardness grades. Since carbon sticks around almost forever (as in Carbon-14, used to date antiquities) I guess that's archival too.
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