Hey there. I've found this US-album in my collection and I've tried looking through it and comparing a bit with the online-catalog on Mystic. However I don't know the details that decides the dates.. I can only compare with the pictures. I think all of these are Used and in decent condition at least.
What are these "grills"? Is it how the perforation is done? 10x12, 10 "^" on 12mm?
Are any of these worth more than 10-15 dollars?

Sadly there were only one stamp attached here.. and if I checked right in the mystic-online-catalogue, it's not worth anything.
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Here there were some more stamps, and it says 1870-71, although I doubt if everything is in the right order and with the right colour.
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This 30 cent, I saw there were 3 different varieties of.. And it seemed to be quite expensive.. I'd like to know which variety.. Thanks.
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Another page :)
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I took pictures of the pages with the oldest types of stamps. They might be faults in the sorting, due to the pictures being black&white.
Hope you can answer my questions! Thanks a lot!