Hi Stig,
I found this image of MF.890 On Kees Kort's Flicker site :
https://www.flickriver.com/photos/va...2/48219829747/
Which based on the location of the radiators indicates this batch
might be SIA 5 too, but definitely Fiat A.10 powered anyway. However, short of finding an italian publication dealing with Italian MF.11 derivates, which would be the ideal case I case I'll have to assume I've gone as far as I can at the moment in identifying Italian MF.11 derivatives. What would really be beneficial is seeing a photo of a machine that is definitivly a Savoia built example so as to be able to look for distinguishing characteristics.Is for example the style or placement of the serial number different on Savoia built machines or those of Macchi or indeed any other builder of the MF.11 in Italy?.
Regards,
Clint