This looks great and is an interesting lens. For around € 1000, I could buy the 125 Macro APO Lanthar.
Yes I just bought this Rokkor. I have been hunting on some Rokkors, lately, only if I can buy them cheap.
Also bought a Rokkor 250/5.6 mirror for €70,- (usual they go for around € 600 on stealbay). Did not look so good, but good enough, and it had a loose ring inside to cover the outer edge of the mirror inside. You didn't even see it on a shot, but it is at the lensrepair. At the same time it will be cleaned.