Stamps, envelopes etc

[Kittyhawk]

Is anyone into collecting this sort of stuff?
I have a bunch of addressed envelopes with stamps issued by the Ross Dependency in Antarctica, stamped and signed by the postmaster at Scott Base. 1972.
Also a bunch of addressed and unopened envelopes from the Pan Pacific Boy Scout Jamboree. 1955. There are letters inside, presumably never read.
Destined for a rubbish tin unless anyone is interested. I'll fork out for the postage.
Sample photo: : :

 

[Chris152]

We used to collect them as kids, always looking out for rare ones and never finding any. But back then, it helped us know a bit more about where places across the world were, and I remember the satisfaction updating the album. Happy memories.