Hi Htx,
Alas! you have drawn a real blank.
I cannot assist, I have very little knowledge on this topic, in fact, when I generally see a "Papal States" stamp, or a "Roman States" stamp, my eyes glaze over.
It is a VERY specialised field.
My route ? I use established auctioneers links to see stamps of similar ilk, and toggle them with my example, and guess if it seems remotely similar,
these stamps have been extensively forged
Auctioneers like.......
http://www.cherrystoneauctions.com/...+StatesYour second stamp is an Italian Revenue Stamp, quite common
and once again, the catalogues available for revenue study are extremely expensive.
Early Revenues (up to 1915) can be had by the free Catalogue "Forbin"
I think Don may have a link in "stamp smarter" here.
Marca da Bollo = revenue, see
https://en.wikipedia.org/wiki/Reven...mps_of_ItalyHence, like a lot of us, Italian Revenues lay orphaned "back of book" in our collections.
Sorry.
TIP: Possibly lots of info laying dormant at SCF here, try "searching" using the text on the stamp eg "Marca da bollo" etc.
See what comes up.