United States 15-cent postage stamp depicting John Steinbeck

This item appears to be a used or cancelled United States postage stamp, bearing a portrait and text consistent with the 'Literary Arts' series. The stamp features a monochrome, blue-toned illustration of the author John Steinbeck, including several visible text markings: 'John Steinbeck' across the top and 'USA 15c' at the bottom. The stamp exhibits standard rectangular dimensions with perforated edges on all four sides. There is a secondary fragment of another red-colored stamp visible underneath and slightly to the left, which bears the partial text 'LUC'. The primary stamp shows signs of wear consistent with circulation, including a possible faint cancellation mark or smudge on the right cheek of the portrait and some minor discoloration along the paper edges. The lithography style and 15-cent denomination are stylistically consistent with issues from the late 1970s. This identification is based on internal text and visual evidence but remains a hypothesis pending verification of the paper stock, gum, and physical integrity by a philatelic expert. No evidence of a unique error or rarity is visible in the provided image.

Based on the provided image, I am evaluating what appears to be a United States 15-cent postage stamp depicting John Steinbeck, consistent with the 1979 Literary Arts series. From a photograph alone, I cannot evaluate the paper stock, gum condition, or microscopic details, so this identification remains a working hypothesis. The item exhibits visible signs of wear, including a presumed cancellation mark and peripheral paper discoloration. In the current philatelic market, stamps of this era and denomination were printed in massive quantities, meaning supply far exceeds demand. Assuming this identification is accurate, millions of similar examples exist. Therefore, single used stamps of this type generally hold negligible financial value and are typically traded for mere cents, often categorized at absolute minimum catalog values. If this piece were somehow an unrecorded error or variation, the value would differ, but physical inspection by a philatelic expert would be necessary to evaluate such a hypothesis. Without physical examination, I base this estimate on typical secondary market behaviors for common, circulated late-1970s US domestic postage.