1965 USSR Karymsky Volcano 12k Postage Stamp

This is a vintage postage stamp from the Soviet Union (USSR), issued in 1965 as part of a series featuring volcanoes. The stamp has a face value of 12 kopeks (expressed as 12k). The central artwork depicts a dramatic eruption of the Karymsky volcano, showing a large plume of smoke and ash rising from the summit. In the foreground, there are dark, rocky peaks and a small silhouetted figure of a person standing on a ridge, adding scale to the natural event. The text is in Cyrillic; 'ПОЧТА СССР' (Post USSR) is prominent at the bottom, accompanied by the year '1965'. At the top right, 'КАРЫМСКИЙ ВУЛКАН' (Karymsky Volcano) identifies the subject. The stamp features standard line perforations on all four sides. The color palette includes muted tones of grey, blue, and black for the mountain and smoke, contrasted with a yellowish-beige sky and red accents for the year and currency. There is a partial black circular postmark in the top left corner, indicating the stamp was used. The physical condition appears good, with clear imagery and intact perforations, though the presence of the cancellation mark impacts its collectibility status as a 'used' specimen.