Since you provide no metrological specifications here are just some random comments ... white metal is usually a term thrown around by collectors of all levels when they wish to call a coin that is light and not a heavy cast ... be that as it may ... but its actually tin with lower levels of antimony and lead although sometimes the lead values can be high going into double digits as a percentage of the alloy. The piece looks like it was clipped after being mint struck as the letters near the edge are full with no indication of bifurcation. The letters are sharp so I doubt its a high lead cast production piece. Interesting fake of the period (probably) which was clipped down for whatever reason ...
John Lorenzo
United States