Home Bottle Database Bottle Tops Bottle Base Bottle Closures Rarity Guide Dating Guide Condition Guide Purchasing Bottles Digging for Bottles Diving for Bottles Bottle Articles Trademarks About Us Bottles Wanted Bottles For Sale Photos of the Past Bottle Humor Bottle Puzzle Contact Us Links	GILCHRIST IMPROVED JAR CO.: GJCO. This jar was made by the Gilchrist Improved Jar Co. This firm had two locations. One in Philadelphia and the other in Elmer, New Jerey. The monogram on the front of this jar says GJCo, which stands for Gilchrist Jar Company. Below are photos of one of there jars. . The inverted porcelain dome in the lid is so that the fruit is kept below the juice. References: Frank & Frank Jr. (Wicker) Bottle Collection. Back to Articles