01 January (Berlin ) within release Accident prevention goes into circulation Se-tenant Defective Plug + Ladder face value 50 German pfennig
Se-tenant Defective Plug + Ladder in catalogues | |
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Michel: | Mi: DE-BE W59 |
Se-tenant is horizontal format.
from HB17 bottom imperforatedAlso in the issue Accident prevention:
Se-tenant Defective Plug + Ladder it reflects the thematic directions:
In physics, energy (from Ancient Greek ἐνέργεια (enérgeia) 'activity') is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The unit of measurement for energy in the International System of Units (SI) is the joule (J).