There was definitely something going on in that range with the stamp they were using. Many bad ones, but also a few very nice ones. They must have had more than one stamp:
Pristine stamp in the 3,168,xxx range:
By 3,180,xxx they start getting bad:
But right in the middle, a beautiful stamp at 3,194,xxx:
And another at 3,196,xxx:
Back to bad stamps at 3,196,xxx:
Boris's gun from the gunbroker auction:
Nice ones again at 3,128,xxx:
Back to bad 3,219,xxx:
<--- Your gun would fit in right here --->Finally, by 3,221,xxx: they are good again: