Indeed I do Ford.  What we have a probability attached to a certain letter(s) or mark.  A mechanic can only be active during a finite time span & typically has at most a couple of tasks.  So the time, the task & the tier will ferret them out.  As M-4 notes, thru superposition of effort by certain mechanics one can sum up the quality of an offering.  All I need to see a ledger, set of invoices, etc. & pretty much all will be apparent.  At the very least, we will be able to narrow the field to just a few mechanics for a certain mark & when we add sourcing along family lines, I believe we'll have her if she doesn't jump.  But then we will truly know every gunmaking family in Suhl & Z-M.
Cheers,
Raimey
rse