Need Help With This Havanna (Sp) AL Cover And 3 Cent Plate 0 Usage

I don't buy much Alabama postal history, but this cover was in a 3-cent Washinton lot I bought at a show earlier this year. There is a Havana, Alabama but I'm not sure if it was ever spelled with a double "n". Is this a legitimate postmark?

I ask because I have other issues with the cover--the stamp. Though it looks a little too red, I've plated it as 19R0 and I'm pretty sure that's correct because the LRT has 1 line recut (few A reliefs do) and there is a shift in the top label--note the dots in the lower half of nearly every letter. However, 9 July is a little late for the usage of a Plate 0 stamp--but it could happen.

Any thoughts are welcomed.

Havanna is/was located in Greene County Alabama according to the 1862 listing of post offices. The spelling is correct and in 1862 there was one other town using that spelling, located in NY state.