Germany ATM (Automatenmarken / Austomatic Stamps)
from a Klussendorf machine,
The Schloss Sanssouci / Sanssouci Palace in Potsdam, Germany.
I think (correction welcome) this is one from a Nagler N24 machine and Michel catalog # 2.2.1 of 110.
Top single stamp faded by the sun I would think.


Info from a great ATM site:
http://www.atm-stamps.de/There are 5-6 versions of this Sansucci Palace stamp, printed by different machines (below by Mettler-Toledo) (Michel 2.2.2 I think), and with varying fonts (bold, normal, thin, wide, light background, dark background, etc)

This particular one is interesting because it is like a misperf on a perforated stamp. The machine advanced the paper a little bit too much and it cut it away from the holes. The amount is printed below where it should have been printed also. The machines must feed these out upside-down I think, in order for this mistake to happen
Also the date of the postmark is before the first day of issue of 2.2.2 so I am thinking this is a variety of 2.2.1. I need a catalogue I think and more of these to compare one to the other. Good thing they are mostly cheap.