Are these rare when in their original bundle? Also what is the correct term when found like this

Watchbelieve

jmlanzaf

Those aren't original bundles. Some collector put them together that way. It was common for collectors to put them in groups of 100 for storage. As you can see from the top one, they are used.

Common stamp, worthless accumulation. They are kiloweight, worth a few bucks per POUND.

Watchbelieve

Thank you. Very informative