Nevada State Revenues

While actively collecting US revenues I am accumulating a lot of BOB stuff including state revenues. Until recently I haven't given it much thought, then out of the blue I saw this lot of state revenues at auction.
I had to have it, not sure exactly why.
I may need a 12-step program for stamp collecting soon.

Don't know much at all about them, see some cancels from Central Pacific RR mid 1860's. Liked the colors and designs a lot.

Those are neat items. You find them frequently on checks from the 1860s along side federal revenues, paying both state and federal taxes.

Those are pretty cool. For some reason the 10 and 20 with the Roman numerals (X XX) really appeal to me.

Are the 25 and 50 on the second last row, with no cancels mint? ie with gum?

Those are really beautiful. Thank you for sharing.

they are really neat. thank you for showing these. I never have seen these before.