Here're some pictures from militariarg.Sturm78 wrote: Cañón calibre 105 mm L 30,8 modelo 1928 Schneider, alcance 15 Km
Cañón calibre 105 mm L 17,8 modelo 1928 Schneider, alcance 9 Km
This is L/17.8, I don't see similarities with Canon C Mle 34.
These are old photos of L30.8. And the lower ones are made in Florencio Varela, a suburb (?) of Buenos Aires. The monument is dedicated to Falkland War, the gun may be a replica.
Also I found at zonamilitar some information about Cañón Schneider de Caballería de 105mm L 12,4 Modelo Argentino 1928:
Cañón Schneider de Campaña de 105mm L 17,8 Modelo Argentino 1928:
Cañón Schneider de Campaña de 105mm L 30,8 Modelo Argentino 1928:
Could anyone please translate the text from Spanish? It seems to be a lot of information.