George, what makes you think this is a Commercial Erfurt?
Can you give us some more information?
Such as serial number, including any letter under the serial number?
Is it all matching, have you taken it apart and checked all the parts?
Can you provide pictures?
What markings are on it? Date? Proofs? etc.?
Check on your left at the Lugerforum portal
www.lugerforum.com and click on tech info and then print out one of the forms on Identifications Sheets and this will help in giving us more information for a possible value.
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