Assorted Pocket Knives with Silver and Unique Handles

• Bakelite - Bakelite was the first completely synthetic man-made substance. Bakelite was invented in 1909 by an independent New York chemist Leo H. Baekeland. It was called the "material of a thousand uses" and used to make everything from car parts to jewellery.
  
  Although nearly all plastic from this period is known as ?Bakelite', it is important to remember that this is an umbrella term that covers many different early plastics such as Lucite and cellulose acetate, and includes Bakelite.
  
  We often think of the colour of Bakelite items as dark brown, but it was manufactured in various colours including yellow, butterscotch, red, green and brown.
  
  Bakelite could also be transparent, or marbleised by mixing two colours. Plastics were cheap to produce and could be moulded or carved in a huge variety of ways.
  
  Bakelite is most commonly associated with radio cases of the 1930s, telephones and kitchen utensils, but it was also used extensively in jewellery manufacture.
  
  Early designs from the 1920s were plainer and simpler than later examples. Geometric and floral patterns typical of Art Deco styling were popular.
  
  During its heyday in the 1930s, Bakelite jewellery was stocked by the most prestigious stores, such as Saks, Harrods and Macy?s, who dedicated a shop window display to it in 1935.
  
  Coco Chanel featured Bakelite items in her accessories collection and the material was praised frequently in Vogue magazine.
  
  Manufacture of some consumer Items were suspended in 1942 in order to concentrate manufacturing on the war effort.
  
  Small items made of Bakelite are now valuable collectables. Andy Warhol was an avid collector, and when he died in 1987, his pieces sold for record prices at Sotheby's.
• Tortoiseshell - Tortoiseshell is a translucent material that comes from the horny carapace of a certain types of turtles, including the hawksbill turtle. It is often therefore mounted on a colour underground - often red - or inlaid with gold or silver thread, as seen in Boulle furniture.
  
  The texture and colour nuances of the material are extremely important. Heated tortoiseshell can easily be formed into various shapes. Like other natural materials, tortoiseshell becomes more beautiful with use. In a time before plastic, tortoiseshell was widely used for small objects such as combs and powder compacts.
  
  In 1973, the trade of tortoiseshell worldwide was banned under CITES (The Convention on International Trade in Endangered Species). Prior to importing or exporting items containing tortoiseshell a CITES permit must be obtained. Tortoiseshell items cannot be traded on Ebay.
  
  "Faux tortoiseshell", another case of man initiating nature, is made from old-style plastics such as celluloid and cellulos and is coloured with red, yellow and brown spots to imitate the genuine article. It is commonly used in glasses frames, musical instruments and costume jewellery.
• Mother-Of-Pearl - Mother-of-pearl, technical name "nacre", is the inner layer of a sea shell. The iridescent colours and strength of this material were widely used in the nineteenth century as an inlay in jewellery, furniture, (especially papier mache furniture) and musical instruments.
  
  In the early 1900s it was used to make pearl buttons. Mother-of-pearl is a soft material that is easily cut or engraved.
  
  Nowadays it is a by-product of the oyster, freshwater pearl mussel and abalone industries.

This item has been included into following indexes:

• pocket / pen knife / knives 94