parcel wrapper or fragment with parcel posts tied. Parcelpostguy, have you ever seen such a thing/is there such a thing?
Yes, there are such examples of usages with parcel post mail. I have up to the 25 cent (no 20 from Shanghai). The 25 cent was a wrapper with other PP values mailed in March or April 1913. On other classes of mail, non-philatelic 1-15 cents and 25 cents. I only know of the 20, 50, 75 cent and dollar on clearly philatelic solo mailings.
I would say the two most unusual parcel post stamp items are two items you would never expect to find let alone ask for. A letter mailed at sea with a parcel post tied by Japanese Sea Post cancel dropped at Shanghai to enter the US mail stream to the mainland. The second is a full wrapper with parcel post stamp(s) from Shanghai, at the domestic
transient second class rate to Cuba, then redirected to within the US State of Georgia.
There is some interesting and properly rated domestic
red and green material between Shanghai and the Philippines as well.
I will add there are one or two similar that are of the five parcel post postage due issues, one of which was cut down to a set of stamps with the full cancel and one stamp on piece.
Just a reminder, I have been playing with the JQ, Q and QE postal history, stamps and other goodies since 1983, prior to that date for the QEs.