Doc,
Did you have a typo in your last posting...???
"...an absolutely pristine 99% test eagle in the 8600 series..."
Not sure if I would trust a TE in the 86xx serial range...
Regarding a pristine 99% TE Luger...
Here is what another Member posted about another reported mint TE luger some time ago :
"...just because Test Guns were sent to Cuba, Manila, PA, Puerto Rico and carried by cav soldiers, why would it look too nice..."
Some sage advice herein...