Crystal door knobs date back as early as the 1800s, when molten glass was first pressed into door knob molds. They became very popular in the United States after World War I. Cast iron, bronze and brass door knobs were in short supply because all kinds of metal was needed for ammunition and airplanes back then. Since there wasn’t a shortage of sand, door knobs were made from glass or crystal. By 1920, all of the biggest hardware makers started mass-producing all kinds of these door knobs.read more related information at http://www.petdoor-4less.com/changing-to-glass-door-knobs/
In that time, most crystal door knobs were clear and usually had six to twelve facets. The faces of the knobs were mostly flat so a person could look inside and see pin-prick, bullet, and star designs that were molded at their bases. The less common types were ones that had color like cobalt and robin’s egg blues, red, violet, amber, emerald, and white milk. You can still find all kinds of various shapes and not just round ones.
One popular Art Deco style knob had tiny bubbles inside them and many people today like to use them when they decorate the interior of their homes with that sleek look. The trend of crystal door knobs carried on through the 1940s, but it started to slow down by the 1950s. Architectural tastes had changed by then, and Americans began to like more modern lines.
Ninety or so years ago, crystal glass door knobs were standard in many new homes. Today, they are very sought after and people try to find them at flea markets, salvage yards and garage sales. Back then these knobs were made to last because they had brass or steel shanks. Today, many knobs have cheap metal alloy and some even have plastic parts. Their enduring design, craftsmanship, design, and their ability to work with most modern locksets, have certainly earned them an excellent reputation today.
Anytime you want to replace just a single door knob in a set, it’s a good idea to bring it’s mate along. Since there are so many knob patterns to select from you may get confused. You also need to bring along the spindle because knobs that were made after 1900 had their threads inside the shank. You need to make sure to correctly fit the spindle to the door knob prior to buying it because setscrews and thread sizes can really vary.
Antique or vintage crystal door knobs come in a wide range of prices. Most of the time, the price is based on rarity, condition, color and style. The most common ones are the twelve-sided types and you can anticipate paying about $30 to $50 per set. Eight-sided door knobs can cost anywhere from $60 to $100. Some hand cut-crystal balls get much higher prices, up to $500 per pair.see more reviews for more information.
The most valuable knobs are the cobalt blue and red ones. These fine door knobs were most often used in Victorian mansions for parlor and dining rooms, where guests were entertained. Crystal door knobs have that wonderful “Old World” feeling to them and they add that perfect touch to rooms that have antique furniture.