On August 15, 1974 Norway issued a two-stamp set promoting industrial safety. The 1.00 kroner value (Facit #719) of this set depicts a combination turbine and cogwheel.
Here is the 20 pf value (Mi #442) from the Federal Republic of Germany's August 14, 1964 set of three stamps commemorating Prigress in Science and Technology. Stamp commemorates the centenary of Nikolaus Otto's (1832-1891) internal combustion engine.
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Posted 03/04/2021 12:09 pm
