Was browsing through some old stockbook lots and pulled a few items that piqued my curiosity. Could use some help with identification and/or valuation.
#1. Presumbably a modern facsimile of US #2. The appearance is all wrong. The paper is too white and the stamp is gummed (see second image).
#2. Advertising label/cinderella?
#3. The appearance and surface textures looks "wrong" for lack of a better word. Counterfeit? But why?
#4. Envelope cutout of some sort?
#5-7. Precancels, but early than those I usually see. Anything of note?
Images are 1200dpi, so if you click on them you'll get more detail.

