ID Tag Estonian guard unit. Very nice zinc half of an Erkennungsmarke of the Ost-Ersatz-Battalion, part of the Estnische Ersatz-Sicherungsgruppe Narwa, a unit raised in 1942 for occupational duties in and around Narva. It was found in Kurtna in 2020.
The condition is excellent. Very interesting to see both the Estonian and German spelling of Narva (Narwa) used on this tag. Very rare tag to find.