Finding a IIc that wasn't bashed up so that I could use the top cover and the rest of the required bits to covert my IIIc with bashed cover and dead meter to be useful but without ripping apart a IIc that could easily be restored to as new condition ... That's why I bought four, found two of them to be easily restorable, found one with damaged internals and a good top cover that I used, and still have one in a box to evaluate for rebuild. Another thing that made it crazy was that I put absolute low ball bids on four cameras listed as "for parts only -- not repairable", won all of them at auction, and then found two of them simply needed a good clean and service to be perfect.
I'm happy with the Retina IIIcx that came out of it, and the two superb working IIc models, but it was a bit crazy in the doing of it.
G