Yes it is a dogtag. When a soldier was KIA it was broken in half, half remained with the body and the other half went to records I believe. That one seems to me to be no good. The type seems wrong and it does not seem to have a name and unit mark which seems odd. I am no expert on these so don't cast it out till you hear from someone more knowledgeable, but I do know it is supposed to be a dogtag. Loschzug means fire brigade so what seems odd to me is that it is fire brigade "liblar" 26. I don't see how that would identify the man himself unless he had the number 26 as his personal ID number. I don't see why someone would counterfeit such an item but it just does not look good somehow. Best, Sal