RammJet is right, there is no WaA stamps on aircraft parts (excepted guns). WaA is an Army acceptance stamp, the LW (Flying material only) had its own acceptance system, with stamps reading "BAL" and the number of the controller (BAL=Bau Aufsicht der Luftwaffe).
BUT a Luftwaffe tank or a Luftwaffe K98K -for example- would carry Army WaA markings because these iltems were not specific aviation material and therefore inspected (and accepted) by the Army. But the Army could not inspect nor accept aircraft parts (excepted guns and ammo). BAL inspectors depended of the RLM (Air Ministry)
BUT a Luftwaffe tank or a Luftwaffe K98K -for example- would carry Army WaA markings because these iltems were not specific aviation material and therefore inspected (and accepted) by the Army. But the Army could not inspect nor accept aircraft parts (excepted guns and ammo). BAL inspectors depended of the RLM (Air Ministry)
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