I've got a question about PRS guitars and the use of black-lights to determine vintage status.

As most collectors are aware, black-lights are useful in determining the status of vintage instruments. Those original finishes from the '50's and '60's on those vintage Gibsons and Fenders will glow under a black light so that any subsequent refinishing or repair work will become immediately obvious. Wen evaluating whether it's been refinished or repaired...the black-light don't lie!

I guess my question is twofold...first, what is it about the aging process that causes that classic glow under the black-light? More importantly, from a historical perspective...how many years will it take for PRS guitars to develop that telltale "glow" under black-light? And, would the various finishes that PRS uses...nitro, poly, V12....have different qualities under the lights? And different relative times before they "age"...i.e. is that V12 more durable than nitro or pply??

Of course, this question is merely just out of curiosity.... since I probably won't still be alive by the time these guitars have the history and years behind them that the aforementioned Gibsons & Fenders have.