This was a new Marz 2.5 which suffered buyer abuse to the prop spinner and crankshaft threads, which look awful, but function fine.  This is otherwise a new and perfect engine.  I have bench tested this one and it starts, tunes and runs perfect.  It is NOW SOLD, Thanks for finding her a home Peter.  Please call for more info or to order.   602-863-1684   Ed Carlson  (I have a PAW .60 which will be listed next-as soon as I remember how to do the photo stuff on this web site!)