WTB: Rolex 5513 from 1972

[Mark020]

I'm looking for this on behalf of the wife of a friend for his 40th birthday. I will be doing the transaction and I am based in the Netherlands.

What we are looking for is the following:
-Wearable so no museum pieces
-Strong case/dial/hands
-Easy replacable stuff (bezel/bracelet) is not too important. Neither is being in need of a service
-Caseback strongly preferred 1972 (so not the generic 5513 one)
-No B&P unless they don't command a premium
-I have references and I expect you to have the same