I have stumbled across a rather large medal and am trying to establish what it is, what it was for and when it was produced. It measures 2 and a half inches (62mm) in diameter, is 3/10 of an inch (4mm) thick and is rather heavy. These photos are not terribly good but I can upload full size if needed. On one side, it has the figure of a woman pushing a not very happy person with her feet away from herself. There is an obelisk with the double eagle on the top and also a theodolite on a stand. In the distance, two surveyors are at work. Underneath is the inscription: POSITI A GRES LIMITES – D. XIII. MAY. - MDCCLIX On the other side is a picture of a woman, who is (I presume) the woman referred to in the inscription around the edge: D. G. ELISABETA AVGVSTA. OMN. ROSS. I take this to be Elizabeth Augusta but who she was is anyone's guess. From what I have worked out so far is that there were land disputes in Prussia, part of which is today's Germany (my geography is non-existent for this part of the world...) and it marks when the disputes were resolved on 13th May 1759. I think..... If anyone could shed any further light on this, I would be grateful.