Item includes 6 coin set, coin protectors, display case, and storage bag. 

As part of DuPont's 2002 bicentennial celebration, this six-coin collection highlighting 200 years of scientific achievement was produced in a limited edition of 2620 sets.  Each proof-quality coin in the collection measures 39 mm (1.5 inch) in diameter and is minted from 1 Troy ounce of 99.9 percent fine silver. Selective 24-carat gold plating is used on the sculpted 3-D face side and the DuPont oval on the reverse side.  The face side depicts the DuPont scientific achievement and the innovators associated with them.

The collection includes the following:

• Improved Black Powder - E.I. and Lammot du Pont: French immigrant Eleuthere Irenee du Pont de Nemours established the company in 1802 on the banks of the Brandywine River near Wilmington, Del. Citizens of the United States used his dependable gun and blasting powder to build and defend the nation. Later, E.I.'s grandson, Lammot, created a less expensive yet more powerful product when he developed the first notable composition change in the 600-year history of black powder.


• Neoprene and Nylon - Wallace Hume Carothers: Chemist Wallace Carothers left a Harvard teaching position in 1928 to work in the DuPont Research Laboratory, the first such facility opened by a major U.S. company. His invention of neoprene synthetic rubber in 1931 and nylon in 1935 started what has become known as "The Materials Revolution."


• Teflon(R) - Roy Plunkett: As a research chemist in 1938, Roy Plunkett accidentally discovered polytetrafluoroethylene, a white, waxy solid so slippery virtually nothing stuck to it. Introduced as Teflon(R) in 1943, it now coats everything from satellite components to non-stick cookware and stain-repellant fabrics.


• Kevlar(R) - Stephanie Kwolek: After earning a chemistry degree from Carnegie Institute of Technology, Stephanie Kwolek joined DuPont in 1946. Her discoveries in the area of liquid crystalline polymer solutions were the basis for Kevlar(R) brand aramid. Pound-for-pound stronger than steel, the material is used in bullet-resistant vests, boat hulls, helmets, skis, rope, cable and the brakes for trains, planes and automobiles.


• Agricultural Yield Improvements - Henry Wallace and George Levitt: Henry Wallace, a plant geneticist and founder of Pioneer Hi-Bred, now part of DuPont, improved crop yields by developing the first commercial hybrid corn in 1923. A half century later, George Levitt discovered a new class of environmentally friendly weed killers, introduced as DuPont(TM) Glean(R) herbicide in 1982.


• DuPont Nobel Laureate - Charles Pedersen: At the end of his 42-year career with DuPont, Charles Pedersen discovered a novel class of chemical compounds: `crown' ethers. This discovery, just two years before his retirement in 1969, earned him the Nobel Prize for chemistry in 1987, a first for DuPont scientists.

The coins are housed in a premium quality display case, handcrafted of solid wood with polished brass hardware and hand-rubbed ebony lacquer piano finish. 

This set is numbered 0134 of 2620 produced.