A couple of the radios which ended up in my collection came through my hands as repairs originally - I know that because I used to put a little 'signature' on the PCB of every one that I looked at and two of them eventually ended up being in my ownership.
In one case I was able to trace the whole story of where the radio had been in its convoluted journey away from me and then back to me, but as to the other, I have no idea of its history during the intervening years. I only realised it was one I had seen before when I looked inside it.
So never say never... that M588 may come knocking on your door any day now.