This is a cover that has been sitting in my collection so long I don't even recall when or where I got it. It's a puzzler to me: the cachet looks to be for an FDC of Sc. 1146, but the label is something else entirely. Would this be considered a local post or some kind of U.N. franking? The small auxiliary marking says: "Postage Paid/in accordance/with Sec. 20/U.S. Code."
Can anyone offer some insight?