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Unread 11-21-2009, 09:27 AM   #13
Mauser720
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Hi Postino -

You are definitely on the right track! I was hoping you would jump in on this topic since you are a machinist.

Now if I understand your measurements, of the five receivers you miked, the variation in the measurements from the thickest to the narrowest is only .084 of an inch. Right?

Now each one of these measurements is valuable, because it shows what was created at a certain time and for a certain purpose.

For example, suppose that someone shows up with a 1914 DWM LP08.

You have already shown that a typical Imperial Luger will have a measurement of .875 inch. (And you don't have to use inches, but for purposes of this discussion that's what we'll use.) Now if someone took a 1915, or 1916, or 1917 DWM and ground the date off somehow, it would have to remove some of the original metal and it would have to result in a reduced measurement too. Then the date 1914 would have to be stamped on it. In this example, regardless of how professionally the actual date was removed, and regardless of how professionally the new 1914 date was applied, you would still have a receiver measurement that was below what is "normal."

And this in combination with other factors, would be an aid to determining whether the gun had been boosted or was a fake, etc.

And the value of this technique might not be limited to just changed dates either. Any Luger which had a controversial crest applied to the receiver would be a candidate for this measurement, etc.

If someone is already using this measurement to evaluate Lugers, then I would be interested in hearing more about their experiences.

It would take someone like Postino who knows how to use a micrometer and has the patience to track down and record the measurements before we could begin to draw some conclusions. You would want to take a sufficient number of measurements so that you could have some confidence in the averages for a particular year, etc.

Unless someone is already doing this, then at this point it is just an idea that has yet to be developed.
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