Wilde's Dynamo-Electric Machine Invention 1915 Ad Trade Card

Description

Wilde's Dynamo-Electric Machine Invention 1915 Ad Trade Card
NOTE:
THESE ARE NOT POSTCARDS - THEY ARE TRADE/ADVERTISING CARDS.
THEY ARE SMALLER THAN A STANDARD POSTCARD
AND
THERE IS ADVERTISING TEXT ON THE BACK!
THE ACTUAL CARD SIZE IS APPROXIMATELY 2 7/8 '' X 4 3/8 '' OR  7 cm. X 11 cm.
ORIGINAL 1915 TRADE - ADVERTISING CARD
WILDE'S DYNAMO
Henry Wilde (1833 - 28 March 1919 was a wealthy individual from Manchester, England
who used his self-made fortune to indulge his interest in electrical engineering. He invented
the dynamo-electric machine, or self-energising dynamo, an invention for which Werner von
Siemens is more usually credited and, in fact, discovered independently. Wilde was the first
to publish,  his paper was communicated to the Royal Society by Michael Faraday in 1866.
The self-energising dynamo replaces the permanent magnets of previous designs with electro-magnets
and in so doing achieved an enormous increase in power. The machine was considered
remarkable at the time, especially since Wilde was fond of spectacular demonstrations, such
as the ability of his machine to cause iron bars to melt.
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.
THESE CARDS ARE NOT MODERN REPRODUCTIONS
THESE CARDS ARE 100+ YEARS OLD
THEY ARE NOT PERFECT
THERE MAY BE:
SLIGHT PAPER LOSS - SMUDGING - ROUNDED CORNERS
NOTE SLIGHT IMPERFECTION AT TOP!
SEE THE IMAGES ABOVE!
17  AUST
WE COMBINE SHIPPING
BUY 1 TO 4 TRADE ADVERTISING CARDS AND THE TOTAL T 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! Absolutely super cool copper sterilization containers with internal copper lift and original glass petri dishes, with metal lids.  I originally thought these were field collection storage containers for a lab, or other science application. Now, I believe the copper storage containers were used to sterilize the contents in the petri dishes, for either scientific or medical use.
Either way, the patina on the outside of both tubes is incredible.  A beautiful green, combined with writing on the containers, and general wear from use and time. All combines to make two great pieces of history, and two great display pieces, and a great conversation starter. There is a large "302" written on each tube, along other writing and indications on the lids.  The petri dishes are glass and each have a metal lid, silver in color, also with various writing, which looks to be classifications.
Tubes stand about 10 1/2" tall and 4 1/2" in diameter. Petri dishes are about 3 3/4" diameter. includes 10 glass petri dishes with lids, two internal copper lifts and the two copper storage units. Also has a few plastic petri dishes.