Hi RuudBurger - your build looks excellent. Nice finish and it looks so close to the original!
I hope you don't mind but I'm going to just toss mine into the thread. 
I built mine into an Ikea frame as I didn't have the tools or skills to do the woodwork. LEDs are controlled by two MAX7219 and time keeping is done with a ChronoDot. Also my first project with the Arduino...
Best regards