Personally, I would take these to a reputable stamp dealer, seek advice on soaking these in cold water (Some may have "fugitive Inks")
If OK, I would remove the shards of paper, and place in stamp mounts.
Handle with care.
The stamps not shown, are Revenue Stamps, and are listed in the John Barefoot Catalogue "Commonwealth Revenues"
I have the 2000 edition, too many to address here.
Nice Link Jill.