I found a Nokia craddle that fits this connection, the guy sent me the phone too and it's working. Looks like it's integrated hands free, when I plug the cable in, the radio shows 'phone'! Where the microphone is, I have no idea, and I have no sim card fitting the old Nokia to check if the hands free really works.
Anyone knows how to convert the Nokia cradle into iphone one? Maybe even as a charger or something. The Nokia voltage is 7.5V, I have checked that...