Quart-sized, light aqua colored glass fruit jar, a.k.a. canning jar, embossed on the body with “MILLVILLE / ATMOSPHERIC / FRUIT JAR” and “WHITALL’S PATENT / JUNE 18^TH 1861.”  All letters / numbers 3/8” high. Features the original cast iron clamp with a thumbscrew at the top that secures the glass lid to the jar.  Jar is in excellent condition with no cracks, scuffs, scratches, clouding or chipping. The cylindrical bottle measures 9” high including the clamp, has a 4” wide base and a wide, unchipped neck and spout opening.  Same color lid cleanly embossed with “WHITALL’S PATENT / JUNE 18^TH 1861.”  Specimen exhibits a smooth hard body surface. Cast seam visible on each side. All glass is clear and clean with just a very few tiny air bubbles scattered about. Used to hermetically preserve fruit and was the forerunner of the more modern ‘canning’ jar. An excellent condition, Civil War dated, glass antiquity highly sought by collectors.