Ammo carts

Hi,

My name is Pawel. I am writing to you from Poland. Sorry for writing in English, but Italian is still an unknown language to me :)
I am a member of a historical reenactment group od 1939 Polish Horse Artillery and I need help of our Italian friends :)

Between 1918 - 1939 Polish artillery used two types of 75 mm ammo carts. One of them was the French Schneider Ammo cart.
The second main ammo cart was the "Italian Ammo Cart" for 75 mm ammo, on the drawing below. The question is - could anybody help us with its data, details, pictures or even history??? Plans would be a miracle! Anything? We are building a copy of the russian 1902 field gun and after that this "Italian cart". Please help.

http://odkrywca.pl/forum_pics/picsforum7/jaszczgn75.jpg

http://odkrywca.pl/forum_pics/picsforum7/jaszczg.jpg

It seems I put this post in the wrong part of the forum. Could the moderator fix this? Sorry!

It would be the ammo cart for Horse Artillery (Artiglieria a Cavallo).
I don't know if it was in use with field artillery too.

[attachment=0:2go8qh4x]CassoneArtiglieriaCavallo.jpg[/attachment:2go8qh4x]

Regards
Stefano

Trad.: Dovrebbe essere il cassone munizioni per l'Artiglieria a Cavallo.
Non so se fosse in uso anche con l'Artiglieria da Campagna.

Thank you!
I just found information, that those were for italian model 1906 field cannons. Those were bought by Poland during the 1920 war with Russia.
Stefano, have you got this plan in bigger resolution?