Irish 'Eire' 1/2d Green Stamp with Red Overprint

This item is an Irish postage stamp, specifically a 1/2 pence stamp, identified by the text 'Eire' at the top and '1/2 leat pinsin 1/2' at the bottom. The stamp is predominantly green, featuring an intricate, possibly Celtic-inspired, design within its border. The central motif appears to be an oval or shield shape with stylized lettering or imagery. A prominent red overprint, applied diagonally across a significant portion of the stamp, reads 'Rialtas Sealadach na hEireann' or a similar Irish phrase. The overprint suggests a provisional government issue. The stamp is perforated along its edges, indicating it was part of a larger sheet. Visible condition issues include a handwritten '120' in black ink in the upper right margin above the stamp, and possibly some minor creasing or handling marks commensurate with its age. The perforations show some wear and may have slight tearing. The design elements are somewhat obscured by the red overprint and the overall image resolution, but the craftsmanship appears consistent with early 20th-century philately. The 'Eire' inscription points to an Irish origin, likely dating from the period of Irish independence or soon after, possibly in the early to mid-20th century. The red overprint often signifies a specific provisional issue during a transitional period.