I thought I had replies, but no!
I have a pair of 5 metre bumpers (look ok from 5 metres!)
I bit the bullet & bought new stainless from Lou Shorten. These are straight, but were probably replated 20 years ago & are a bit flaky on the lower halves.
I'll photo them tomorrow, but here are some taken in 2012
I can get them taken to Osnabrueck if that helps!
Price , I suppose about £150??
David Harrison