I ended up opening it with a butcher knife (not without damage, it will be seen below, no problem I will buy a glass below).
Here is the result: The size of the two small needles will remain as it is, but I will put needles type leaf. For the figures, I planned to paint Roman numerals in a black circle and leave the big space around empty; and the grand feu email will obviously be smoothed and lacquered (you see it here just out of the « oven » -made house-) and the magnificent base 2824-2 movement taken with a camera that certainly does not pay him homage! I changed my hammer because I