I'd like a little more reach and wonder if anybody would like it the other way around?

I have an ALPA SK 120 N in excellent condition. I bought it as a demo unit at Photografica in Copenhagen and it has been checkedout at ALPA in Zurich and it is perfect. It is spot-on with the focus and is clean.
I have plenty of sample images, it is razorsharp

I would prefer the ALPA SK 150 N in similar condition.

Anyone tempted?