1955 People's Republic of China (PRC) 3 Fen Post Office Stamp

This is a definitive postage stamp issued by the People's Republic of China circa 1955. The stamp features a central illustration of a large building, likely the Beijing Post Office, rendered in a teal or dark blue-green monochrome ink on off-white paper. The upper left corner displays the denomination '3' followed by the Chinese character 'fen'. At the base, a horizontal inscription reads 'China People's Post' in simplified Chinese characters. The stamp is approximately 20mm x 25mm in size with standard perforations. Regarding condition, it appears to be a used specimen, evidenced by the light, curved cancellation mark visible on the left side of the building and across the '3'. The perforations are reasonably intact, though slightly irregular on the top edge, suggesting manual separation from a sheet. There is a small dark spot on the top-left perforation which may indicate oxidation or light staining. The engraving style is characteristic of the mid-20th-century Socialist Realism aesthetic, emphasizing state infrastructure and national progress. The centering is slightly shifted toward the bottom left border. As a piece of philatelic history, it represents the early postal system of the PRC during its first decade of establishment.