Thank you TazMan2000 for all the information!!. Yes, there is no alternative but to look on eBay. Right now there is one but at 80 € (88 $) it's too expensive for me :/.
And yes, I could put the pictures of my diorama, but it is not perfect. It is the first thing I do in scrath, and the first time I use resin to duplicate parts. In addition, it is not exactly the same as the original, for example, the part of the tower that is just below the cannon turret has no inclination, it is straight, I did not calculate the measurements well and I could not make it tilted because the turret had been ridiculously small.
But, well, i will put some of them
Thanks you again, and congratulations on your great work !!!