It looks alot like Perpetua, but the scan appears to be thinned or something.

Yeah, the image is from a 72 ppi Word doc header.
>sigh<

Perpetua led me to Lapidary 333, which seems to have a more pointy serif on the S:

I'm going to call it done. Thanks, Bob!

And of course Lapidary333 is Bitstreams version of Perpetua (with slight variations)

...and I think Perpetua Titling (Light) has a serif pointy enough

You are right it is pointy Fivos, but the Bitstream version is also slanted just enough.