Northwood The underlined "N" in a circle is the most frequently seen mark in classic era Carnival.
Not all Northwood patterns carry the mark, and in some patterns that do carry the mark, not all pieces may have it.
On earlier flasks, fruit jars, and soda bottles, and especially examples produced in the mid-nineteenth century period (1840s-1860s), the full factory name or initials may be embossed across the front.Hopefully this database will be of some help to those who are attempting to assign an approximate date range to a particular bottle, assuming it carries an identifiable glass manufacturer’s mark. Co.” Also, the abbreviation “Co” (Company) sometimes may be found embossed with either an upper- or lower-case “O” on various bottles made by the same manufacturer.be a glass manufacturer’s mark and so may not be listed here. Many bottles carry only a number (or numbers) on the base.Hazel Glass Company, Washington, PA (began 1887) and Atlas Glass Company, also of Washington, PA (began 1896) merged to form the Hazel-Atlas Glass Company, Wheeling, WV, in 1902. (In my own opinion, it is likely, or at least very possible, that the “H over A” mark continued to appear on some containers produced after 1964, since a very large number of molds were then in use, and it would have been a considerable endeavor just to make minor re-tooling changes on all of those molds to erase or replace the makers mark.) Tremendous numbers of white milkglass liners (the miniature round glass plates or “saucers” that fit inside zinc screw-threaded lids made for Mason-style fruit jars) were produced, as well as canning jars (fruit jars) including the jars for general household use; “packer ware” (generic containers for a multitude of common food products such as mayonnaise, spaghetti sauce, mustard, jams and jellies, coffee, peanut butter, applesauce, etc, as well as non-food items like cosmetics, salves, medicines, chemical liquids), as well as a wide variety of other containers for products of every description.Hazel-Atlas eventually grew to become one of the largest glass manufacturing firms in the world, (probably second in the United States, behind Owens-Illinois Glass Company) with 14 glass plants operating simultaneously. " data-medium-file="https:// data-large-file="https:// class="size-medium wp-image-481" title="hazel-atlas-plate-florentine" src=" alt="" width="300" height="288" srcset="https:// https:// https:// sizes="(max-width: 300px) 100vw, 300px" / In 1957, Hazel-Atlas became a division of the Continental Can Company. Hazel-Atlas’ well-known makers’ mark consists of a large capital letter “H” with a smaller capital “A” positioned underneath the H, appearing somewhat like a small step-stool or bench situated underneath a table.