What is whittled glass?
The term “whittled” or “whittle marked” is a reference to a hammered or wavy surface to the glass that one could imagine was caused by the “whittle” marks of the mold maker on the inside surface of a wooden mold.
How can you tell if a glass bottle is valuable?
The Age of the Bottle While not all old bottles are valuable, an older bottle is more likely to be worth more than a newer one. Seams and pontil marks are two of the ways you can determine a bottle’s age. The pontil mark is the mark at the bottom of the bottle where it was attached to the glass blower’s pontil rod.
What is a mold mark on glass?
The mold seams are usually found on the sides of the piece where a mold would have fit together during production. Rough mold seams often indicate lesser quality glass, but that doesn’t mean those pieces are not collectible.
How do you date glass?
The pontil is a definitive mark that dates glass. Be aware that reproductions can have smooth, molded pontil marks or sometimes an authentic looking jagged mark. Numbers and Letters- Such markings on the base indicate late 19th century to present time day manufacture.
How old is Duraglas?
Duraglas (in a cursive script with only the first letter actually capitalized) was registered by Owens-Illinois Glass Company, based in Toledo, Ohio at that time, on September 23, 1941. The official registration number was #0390467.
Does old glass have seams?
If you examine a piece of pressed glass you will always find either two, three or four seams running through the glass, although sometimes the seams were well hidden in the pattern. Around the 1920’s, Pressed Glass lost its popularity and crystal became the ‘in thing’.
What do the numbers on old glass bottles mean?
In most cases, one- or two-digit numbers are actually mold numbers that indicate the specific bottle mold or section in an automatic bottle machine. If numerous molds were identical, each one received its own number. Base numbers also indicate bottle styles or shapes, manufacturing dates, or factory location codes.
How can you tell if glass is blown in mold?
Examine the Handle and Seams In the case of molded glass, the handle is often part of the mold and shows a seamless attachment to the base of the vase. If you can tell where the handle has been added to the base, it may be made from blown glass. Blown glass may have other seams too.
How do you tell how old a bottle is?
The embossed maker’s mark or letters on the side of a bottle or on the base of a bottle will help to reveal a bottle’s age. Marks or letters on collectible milk bottles and Coca Cola bottles are commonly indicators of age and origin.
What does it mean when a bottle is whittled?
Whittled:A bottle is referred to as “whittled” if the surface texture of the glass has a hammered or dimpled appearance. This was caused by the reaction of the very hot glass hitting a colder mold surface – like “bottle goose bumps.”
What is a tooled finish on a bottle?
Tooled Lip or Finish: Generally just known as a tooled lip. With this style of lip finish, the glass for the finish/lip was blown in the mold along with the rest of the body/neck of the bottle. A “lipping” tool was used to manipulate and form (“tool”) the finish/lip while the glass was still hot.
How were wine bottles made in the past?
(Most of the bottle’s body and neck were typically formed in a mold, though bottles from the before the middle of 19th century could be also be free-blown without the aid of a mold). A lip forming or manipulating tool was used to shape the glass applied to the end of the neck into a lip with the desired conformation.
What is an applied lip in a bottle?
BOTTLE DESCRIPTION & CONDITION GLOSSARY. Applied Lip or Finish: The term applied lip (i.e. a true applied lip) refers to a lip or “finish” for which the forming glass was discretely applied after the body and neck of the bottle was blown. (Most of the bottle’s body and neck were typically formed in a mold,…