Antique pitcher classification dating
The bottles used for illustration are a small but diverse assortment designed to give users guidance on how to work a bottle through the dating information to answer the Homepage's primary question #1 - What is the age of the bottle?
) to the specific dating questions on the Bottle Dating page are included so that a user can reference the necessary portions of that page.
It is more expensive than soda-lime glass, and was first introduced for the windshields of railroad trains, to stop window breakage when trains experienced a severe change in weather conditions.
Borosilicate glass is mainly used in laboratories and does not easily corrode.
Most glass made in the United States today is soda-lime glass, and doesn't involve a big investment.
On the other hand, borosilicate glass - called Fire-glass in the early 1900s and now called by its brand name of Pyrex - is a heat-resistant glass that does not break when exposed to extreme temperature changes.
Neither of these types of glass - soda-lime glass or borosilicate glass - is considered crystal because neither has 24 percent lead content.
Once the likely bottle age or date range is determined, some examples of other places to look for more information is provided.: -It is about 9" (23 cm) in height and 2 3/8th inches (6 cm) in diameter.Each of the green question hyperlinks result in a pop-up page showing the particular question on the Dating Page; once read it should be deleted to avoid clutter.To return from other accessed hyperlinks, use the back arrow on your browser.First of all, despite its name, crystal does not have a crystalline structure.And, "crystal" comes from a term (cristallo) coined by Italian glassmakers in the famous Murano glass-blowing center near Venice to define quality glassware which did not meet the European lead content standard.
Other factors need to be evident to determine if you truly have the real thing.