Vietnamese one dong banknote, appearing to be from the mid-20th century

This paper banknote appears to be a one dong note from Vietnam, stylistically consistent with issues from the mid-1950s. The note features a green and pink ink color palette with intricate guilloche patterns. On the left, a circular vignette depicts a traditional building, likely the One Pillar Pagoda in Hanoi. The center of the note displays the text 'MỘT ĐỒNG'. Prominent text at the bottom reads 'NGAN-HANG QUOC-GIA VIET-NAM'. A serial number '315133' is visible at the top left, and a prefix 'X.I.' is on the right. The reverse (not fully visible) or watermark area is indicated by a large blank circle on the right side. Condition appears poor to fair, with significant creasing, heavy foxing, and dark stains across the surface, particularly near the center and edges. The paper shows visible wear and rounded corners, suggesting extensive circulation. This identification is based on visible text and iconography, but as with all currency, physical inspection is required to determine its specific series and authenticity.

I have examined the image provided of the one dong banknote. Based on the visible iconography, including the One Pillar Pagoda vignette and the 'NGAN-HANG QUOC-GIA VIET-NAM' text, this currency appears to be consistent with the South Vietnam 1955-1956 series. However, I cannot verify the legitimacy of the paper, ink, or security features from a photograph alone; a physical inspection is required to determine if this is a contemporary issue or a later reproduction. The condition of the note appears to be in the 'Poor' to 'Fair' range, exhibiting heavy foxing, deep staining, and significant creasing throughout the central fold and edges. Such extensive wear significantly impacts the marketability for numismatic collectors, who typically seek 'Uncirculated' or 'Very Fine' examples. The value estimate provided assumes the note is a period-appropriate issue for the mid-1950s; if it were a modern facsimile, its value would be negligible. Conversely, if it were in pristine condition, it could potentially command a higher premium. To arrive at a more precise valuation and to verify the piece, an in-person examination by a numismatic expert would be necessary to check for watermark clarity, paper texture, and microprinting details. Generally, market demand for heavily circulated mid-century Vietnamese notes remains modest, with interest primarily driven by specialized historical collectors.