SM-70
SM-70 is an anti-personnel mine or weapon model.
Overview
Type of directional anti-personnel mine.
In detail
It is associated with German Democratic Republic.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“SM-70”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q3351692: SM-70
Consult the source