PTKM-1R
PTKM-1R is a land mine or weapon model.
Also recorded as ПТКМ-1Р.
Overview
Russian anti-roof anti-tank mine.
In detail
PTKM-1R is a land mine or weapon model.
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
“PTKM-1R”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q111842914: PTKM-1R
Consult the source