Help Identifying These Bob Items

Hello all,
Can't seem to find these anywhere in Scott. Anyone know what these are?

The two on the left are cut squares from envelopes for official use only, but I don't see them in that section (Official Envelopes and Wrappers, UO & WO) in the Scott Specialized. They're presumably envelopes from specific government departments; the blue one is certainly from the Department of the Treasury (that's their seal).

I can't help you with the proprietary stamp; I don't see it in the appropriate section in Scott, either.

Hi

The tiny snippet on the right is from a RS4 medicine stamp.

The whole stamp is shown below.

Jim

Entires showing the penalty imprints. Yes, unlisted in Scott.

Thanks so much everyone for the information

Technically, to be listed in Scott, the stamp impression is required to have a value, either numeric or one of the more modern alphabet ratings. There are, of course, a few exceptions (Scott #s UO14-UO17). Those exceptions have been kept in the Scott listings by tradition.