It's been done before...Darryl from DLX did it recently and the guys from CCM have done it in the past...nothing new, definitely not as mysterious as you make it out to be, just not seen very often. Like figone12 said, its an anno over a laser engrave over the original anno
You do come off as being arrogant to say the least, especially after post #9...not a great attitude for a 'sponsor' rep...I'll leave that one alone though...also, PBN and FB are public domain so if you posted it here, it can be re-shared at any time...if it wasn't posted before you posted it in this thread so it's public now anyway...
apologies to YeloSno and o5pr3y for the thread clutter...to slightly redeem my post i will add a photo for you guys and offer services as a judge:
edit: o5pr3y, where did you find a working Nova...? I haven't seen one in years!