It looks like it just a very well inked clear image. It looks like it is a coil? Perhaps perf 10?
If it is Perf 10 vertically, then it can be one of 4 different stamps, depending on Type II vs Type III and whether or not it has a watermark. Note that it is definitely not a Type I. I don't know off the top of my head what the catalog values are, but I can check later. The options are Scott #454 (Type II), #455 (Type III) with single line watermark, or Scott #491 (Type II), #492 (Type III) without watermark.
Native, I fully agree with both of NicholasC's comments. For us to provide accurate and efficient feedback it is important for you to provide FULL information to us. That would be an image of the entire item, in this case apparently a cover? That will give us a postmark date which helps narrow down the possible catalog numbers for referencing Scott, and equally important, Loran C. French's "Encyclopedia of Plate Varieties on U.S. Bureau-Printed Postage Stamps". Then an image of the full stamp including perforations. Then perhaps a close-up of the portion in question - duplicated by words of exactly the feature you are trying to point out. Your first post gave no hint at what we were supposed to be seeing. Scans are typically FAR superior to photographs.
That said, with the extra lines in the ribbons, your stamp is clearly a type III coil, machine applied as evidenced by the nature of the cut to the perforations. Thus Scott 455 or 492 depending on watermark. I do not see any plate variety in French's volume which matches. He is not compete, but he is certainly the first place to start.
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