Benjamin Franklin One Cent U.S. Postage Stamp on Postcard

This item features a United States green one-cent postage stamp depicting Benjamin Franklin, affixed to the reverse side of a vintage postcard. The stamp is part of the early 20th-century Washington-Franklin series, commonly issued between 1908 and 1922. It is characterized by its green ink on off-white paper with perforated edges. The stamp has been canceled with a wavy-line machine postmark from Grand Central Station, New York (indicated by 'GRAND CENTRAL STA. N.Y.'). The cancellation mark also includes a circular date stamp dated September 6 at 8 AM, though the exact year is partially obscured by the text. The postcard itself is made of cream-colored cardstock with printed burgundy text reading 'POST CARD' and 'THE ADDRESS ONLY TO BE WRITTEN HERE.' The left side shows cursive handwriting in faded black ink addressed to a 'William Crump'. The overall condition shows signs of age include slight yellowing of the paper, minor foxing or spotting, and wear along the card edges. The stamp's centering appears slightly off-set toward the top and right, which is a common characteristic of mass-produced stamps from this era.