It looks like it may have been buried as there was some dirt on it, and also a slight crack, though even then there is a fair bit of lettering still seen. One side has a very large M C intertwined monogram with a crown above, and a toothed border. The other size has a large VI above PFENNI** and 1761 below. Some of the lettering around the outside is LAND *UNTZ plus other letters. Where * is typed means unclear letter, and also the M C could be M G as it is in a fancy scroll lettering.
I may be wrong but perhaps it would go in the German States section, which starts at Aachen Thaler through to Würzburg Thaler but not sure about mine. I did see a page somewhere that suggests it may be KM#153 issued 1760 -1761 in Bentheim-Tecklenburg-Rheda. It also suggests the first part of the lettering is G. B T. RHEDA and looking at my coin (in parts I could not make out clearly) I am now sure is right. Diameter about 25mm and made of copper. The Ruler was Moritz Kasimir I apparently.
Is the states list complete - I certainly do not want to add another one in case all written above is wrong. Though if it is correct (and someone has a book that confirms it as 6 Pfennig KM#153) then please add it, plus these photos ...
