PUP designations

[Jimbob52]

I have seen various PRS models with PUP designations such as 85\15, 59\15 etc. What do the numbers refer to?

 

[Bowtiefanatc]

Typically the first set of digits is the inspired year, and the second set is the year made.

57/08 - inspired by 57 PAF pickups, made in 2008.

85/15 - inspired by original T&B pickups Paul made in 85, made in 2015.