Not an AR-3 crossover but right part number

I came across 10 of these crossovers.  They say they are Acoustic Research 810150  which I think was on the AR-3A but the capacitor values are incorrect compared to anything I can find on the internet. It has a 100 uF cap, a 24 uF and a 5 uF. 

I was thinking of using these in a couple of other speakers I have kicking around. Anyone have an idea of what they were meant for and what the pinout I should expect is ?  Am I correct in assuming I should put a 16 ohm pot acoss the terminas labeled VR12 / VR13 and VR22 / VR23 ?  

Kind of new to this rebuilding and wondering if I should spend time using these or think about making crossovers from scratch ?