Inverted And Upright Gas Lighting Mantles 1915 Ad Trade Card

Description

Inverted And Upright Gas Lighting Mantles 1915 Ad Trade Card
NOTE:
THESE ARE NOT POSTCARDS
THEY ARE TRADE/ADVERTISING CARDS.
THEY ARE MUCH SMALLER THAN A STANDARD POSTCARD
AND
THERE IS ADVERTISING TEXT ON THE BACK!
THE CARD DIMENSIONS ARE APPROXIMATELY
2 5/8 '' x 1 3/8 ''  or  6.5 cm. x 3.5 cm.
ORIGINAL 1915 TRADE - ADVERTISING CARD
INVERTED AND UPRIGHT GAS LIGHTING MANTLES
The modern gas mantle was one of the many inventions of Carl Auer von Welsbach, a
chemist who studied rare earth elements in the 1880s and who had been Robert Bunsen's
student. Ignaz Kreidl worked with him on his early experiments to create the Welsbach mantle.
In 1890 Welsbach discovered that thorium was superior to magnesium and in 1891 he
perfected a new mixture of 99% thorium dioxide and 1% cerium dioxide that gave off a much
whiter light and produced a stronger mantle. After introducing this new mantle commercially
in 1892 it quickly spread throughout Europe. The gas mantle remained an important part of
street lighting until the widespread introduction of electric lighting in the early 1900s
GREAT IMAGE!
THE REVERSE SIDE HAS TEXT ABOUT THE IMAGE ON THE FRONT SIDE
SEE IMAGES ABOVE
THE CARD DIMENTIONS ARE APPROXIMATELY
2 5/8 '' x 1 3/8 ''  or  6.5 cm. x 3.5 cm.
NOTE:
THE IMAGE ABOVE IS LARGER THAN THE CARD
TO SHOW THE DETAIL.
THIS IS 100+ YEARS OLD
IT IS NOT PERFECT
THERE MAY BE VERY SLIGHT PAPER LOSS OTHER FLAWS
SEE IMAGES ABOVE!
WE COMBINE SHIPPING
BUY 1 TO 4 TRADE ADVERTISING CARDS AND THE TOTAL TO SHIP IS
BUY 5 TRADE ADVERTISING CARDS AND SHIPPING IS FREE
NOTE:
ON LARGER INTERNATIONAL ORDERS WE MAY REQUIRE REGISTERD
MAIL AND WILL SPLIT THE COST WITH THE BUYER.
INQUIRE IF CONCERNED!