Heard again from Wobbe Reitsma today and he very kindly agreed that I could post this picture from his collection on here. For some reason, he thought I already had it! It shows No.3 on the register: 87-69-RB when it was run by Cees Willemstein of Barendrecht in the livery of Goodkoop de Geus. A splendid picture indeed! 
Cheers, Robert
