AI Appraisal Estimate

This is a rectangular postage stamp from Spain, issued in 1961 to commemorate World Stamp Day (Día Mundial del Sello). The stamp is printed in a monochromatic olive-green or sage-green ink on white paper with standard perforations. The central design depicts a stylized dove, representing a messenger, carrying a smaller stamp in its beak. At the top, the country name 'ESPAÑA' is printed in a clean sans-serif typeface. The bottom right corner features the denomination '10 PTAS' (Pesetas), and 'CORREOS' is inscribed at the bottom left. A notable manufacturing mark is the 'F. N. M. T.' printed at the very bottom center edge, indicating it was produced by the Fábrica Nacional de Moneda y Timbre. The stamp is heavily postmarked with a circular 'DIA MUNDIAL DEL SELLO' commemorative cancellation dated '6 - MAYO - 1961'. There are also wavy line cancellations and a partial black ink-stamp 'CE' at the bottom. The condition shows significant usage wear: the perforations are uneven, particularly on the left and right edges, with some fraying and blunted tips. The centering is slightly shifted toward the bottom left. The heavy cancellations obscure a large portion of the central graphic, which is typical for post-consumed specimens but affects aesthetic clarity. Overall, it serves as a mid-century philatelic example of Spanish postal history.

I have conducted a visual examination of the Spain 1961 World Stamp Day 10 Ptas stamp. The specimen is genuine and printed by the Fábrica Nacional de Moneda y Timbre (FNMT), as evidenced by the clear typography and the specific olive-green ink profile consistent with Era-specific Spanish production. The stamp features a heavy 'Dia Mundial del Sello' commemorative cancellation alongside standard wavy line postmarks. From a philatelic perspective, the condition is categorized as ‘Used - Average.’ While the commemorative cancellation adds some historical context, the heavy ink application significantly obscures the central dove motif, which detracts from its aesthetic appeal. The centering is poor, favoring the bottom-left corner, and the perforations show notable blunting and fraying on the lateral edges. The market for mid-century Spanish commemorative stamps is highly saturated. This specific issue (Edifil #1360) was produced in large quantities (approximately 4.5 million). Consequently, used examples are ubiquitous in the marketplace. Comparable specimens typically sell for less than one dollar, often appearing in bulk packets or 'kiloware' rather than as individual premium auction lots. Because this assessment is based on a digital image, I cannot verify the integrity of the paper fibers, hidden thins, or the presence of residual hinge marks on the reverse. A physical inspection using a watermark detector and a high-power loupe would be required to confirm the absence of repairs or hidden damage. No further scientific testing is recommended given the low market value, as the cost of certification would far exceed the valuation of the stamp itself.