Yep, one mag as the other went back as a core when I bought a pair of new ones. I bought a pair of mags to get a discount on the whole package including harness and new plugs, but to be honest I didn't save all that much. The core that went back had started to misbehave, and I'm told a coil may have been failing, but other internal stuff looked pretty good. Coils are really expensive to replace, hence the purchase.
The still in the plane and running well mag was installed in 2009 as a used, total hours unknown mag that received new points and carbon brushes. My AI did what he recorded as a 500 inspection, gave it two thumbs up, and it has had 156.43 trouble free ours since. I don't need to sell it, but do have a new one the shelf I could replace it with. Neither of us knows what it should be worth and would like your opinions.
