I made some pictures of a plow and a screw in the years 2002, 2005 and 2007.
You can find this plow nearby Loewenstein in Germany 49° 5'16.48"N , 9°22'31.09"O
More impressions of Loewenstein you can find here https://pbase.com/markushuck/loewenstein_herbst
Screw in Autumn 2002
Screw in Autumn 2005
Screw in Autumn 2005
Screw in Autumn 2005
Screw in Autumn 2007
Juergen is making a picture of the Screw (Autumn 2007)