1817 Contemporary Counterfeit Great Britain Half Crown. Dirty Alloy Mix. Bizarre. 32.03mm. 12.6 grams. Crude hand engraved reeded edge. XRF Analysis results: Copper (87.95%), Zinc (9.9%), Lead (1.48%), Iron (0.15%), Tantalum (0.15%), Tungsten (0.13%), Silver (0.09%), Tin (0.07%) and Nickel (0.04%). Tungsten probably from the mineral wolframite - possible as a source indicator. Interesting mix from an obvious crude production process in England. A very interesting contemporary counterfeit based on its composition