Beyond the serial number, German proof marks can provide a definitive date code. Look for a two-letter code near the serial number or on the flats of the barrels:
In this example:
Krieghoff barrels are proof-tested in Germany. Look for the (typically found on the barrel flats). Next to the proof mark (an Eagle over an "N" for nitro proof, or an Eagle over a "U" for Ulm), there is often a two-letter code. krieghoff serial number lookup
Beyond the serial number, German proof marks can provide a definitive date code. Look for a two-letter code near the serial number or on the flats of the barrels:
In this example:
Krieghoff barrels are proof-tested in Germany. Look for the (typically found on the barrel flats). Next to the proof mark (an Eagle over an "N" for nitro proof, or an Eagle over a "U" for Ulm), there is often a two-letter code.