This fine antique American stoneware jug, likely of 19th-century origin (circa 1840–1880), exemplifies classic utilitarian folk pottery from the northeastern United States, particularly the New England or mid-Atlantic regions known for salt-glazed and Albany-slipped wares. The piece features a classic ovoid form with a pronounced bulbous body tapering to a short neck and applied strap handle, finished in a rich mottled brown manganese or Albany slip glaze with distinctive dark spotting and orange-brown highlights—characteristic of period firing techniques that produced organic, flame-like effects. The spout is simple and pulled, with subtle tooling marks visible on the body and handle attachment points, attesting to hand-thrown craftsmanship on a potter's wheel.The base bears an incised or inked collection number "296," consistent with cataloging practices in ethnographic or anthropological holdings. No maker's mark is visible in the images, but the form, glaze palette, and proportions align closely with utilitarian jugs produced by potteries in Vermont (e.g., Bennington area), New York, or Pennsylvania during the mid- to late 19th century, when such vessels were common for storing liquids like cider, vinegar, or water.**Provenance**: From the esteemed collection of Cornelius Osgood (1905–1985), prominent American anthropologist, ethnographer, and long-time Curator of Anthropology at the Yale Peabody Museum. While Osgood is best known for his extensive fieldwork and collections in East Asia (particularly Chinese and Korean ceramics, many acquired via dealer Frank Caro and now dispersed through auctions), his scholarly interests extended to comparative material culture, including American folk and vernacular objects. Notably, Osgood authored the authoritative reference *The Jug and Related Stoneware of Bennington* (1971), a detailed study of northeastern American stoneware traditions, reflecting his deep engagement with this category. This jug aligns with his broader interest in pottery forms and techniques across cultures, and the numbered base suggests it was part of his personal study collection or acquired through institutional exchanges/donations. Items from his holdings occasionally appear on the market with strong provenance appeal.**Measurements**: Approximately 10–12 inches in height (estimated from visual scale; precise measurement recommended), with a capacity of roughly 1–2 gallons.**Condition**: Very good antique condition overall—strong, intact form with no visible cracks, chips, or major repairs. The glaze shows expected crazing, minor surface wear, and patina from age and use; some kiln spotting and minor firing imperfections add to its authentic character. The base exhibits typical unglazed wear and the collection number in stable condition.A charming and well-provenanced example of American vernacular pottery, ideal for collectors of folk art, stoneware, or ethnographic Americana with ties to museum-quality scholarship. This piece bridges Osgood's Asian ceramic expertise with his documented passion for early American jugs, offering exceptional historical depth.**Estimated auction value**: $800 – $1,800.