I'd say it's a .49 pocket too. As the OP said Poe died in 1849, it shouldn't really be a '49 pocket in the movie to be historically correct. Unless Poe bought a brand new '49 pocket the same year he died and was being very physical and using it the same year he died. Makes more historical timeline sense that he would be using a single shot or a '36 Paterson. But that's movie writers and prop masters for ya.
If you REALLY want to see artistic license taken regarding historically accuracy in firearms depiction by movie studios, check this pic out......
The Wayne movie "The Fighting Kentuckian" was set just after the battle of New Orleans in 1814. But check out this poster for a super 8 version of the movie of the Duke firing both barrels of a double barreled sawed off shotgun and his 1873 peacemaker at the same time. Anyone here ever fired both barrels of a double barreled sawed off shotgun with one hand much less did that with one hand while firing a peacemaker with the other hand at the same time? Lol.
Notice the dead guy laying on the ground had a 1873 peacemaker too. Uh huh, 1873 peacemakers in a movie set in 1814. ROFL. At least it was only on that one inaccurate drawing advertising for a super 8 version of the movie. They didn't use peacemakers or double barreled shotguns in the actual movie itself. One thing about revolutionary war and war of 1812 movies, at least they couldn't have the actors shooting those 50 round revolvers that never needed reloading. Lol.
And remember some of the actors who would raise their revolver barrels in the air and then very quickly snap them down and snap shoot just as fast as the gun became horizontal without even taking aim? (usually in 1930's/'40's era Republic pictures and the like. I remember Guinn "Big boy" Williams doing that in several movies) And of course they usually hit someone. Lol. Tickles me.
Also in "The Raven" check out this pic of Luke Evans I enlarged, cropped and brightened. Look carefully at his belt and buckle in the below pic where it is supposed to be
1849....
Extreme closeup....
Looks just like this
1912 Calvary pistol belt and buckle doesn't it? Not only that, look carefully at the stitching on the right of Evan's belt, or to Evans it would be on the left side of his belt, just a few inches to
HIS left of his buckle.
Notice the three short lengths of stitching in the middle section of his belt there? Now notice the exact same three short lengths of stitching in the middle section on the below belt. The three short lengths of stitching is in the exact same place on both belts. I believe they used this below
1912 repo Calvary belt (or one just like it minus the grommets) in the movie set in
1849.
.
.