I have just inherited a collection of British coins, I have discovered two sixpence pieces with the Heads showing upside down to the rear pattern, dated, 1854 and 1874, both have the obverse with a Crown, the words Six Pence and what looks like Laurel and oak wreath. The 1854 Sixpence looks to have been drilled to make a charm and then refilled with either silver or solder. Both coins look very good for there age. I would not mind a valuation, however, due to circumstances I would like to keep hold of them....