Regarding the front sight, this one is an exact match of the long barrels listed in "Lugers at Random". In addition, this barrel also has an index (witness) mark on the underside which, according to a source, is only found on original German barrels. If this is the case, could this be an original installed barrel from say a 1923 Commercial production? The serial number of this gun falls perfectly within the 1923 Commercial production numbers.
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