Not ESO? it should be a czech brand, they produced speedway engines and some crossbikes with transmission.
;-) sorrythanks Zirig
I think this is 500MC.At imola 2009 i saw two for sale.
Yesss .....and I have pictures of those of you say
I have, too.next year we shold meet in Imola :)
Ok 2011 confirmed meeting and drink !! ;-)