3 way Dynaudio Argon crossover

[Dinosauro]

Hi Guys, I've a old 3 way system from DYNAUDIO / DYNACAR 4 ohm. The crossover has 2 inductors, one (air core) for the mid and the second a laminated core inductor for the Woofer.
This inductor is very damaged (rust on metal and gap from metal layers) I would like to replace it but I do not know the value (H).
I tried to draw the diagram with known values.
Can someone help me?
Thanks

 

[David Gatti]

It looks like the mid has a 1st order highpass at 1200Hz.

I would use about 1mH for the woofer lowpass and would leave out the midrange lowpass inductor which isnt needed since the d52 as a very nice high end rolloff anyway.