Silver, 31.3mm diameter, 13.38grams.  FERDINAN· III· D· G· SIC· ET· HIER· REX Bust right, T.6. below.  Rv. HIS PAN· INF ANS. 1799 around eagle with shield of arms on breast, J.U  I · in lower field.  Craig 48.5b.  Good Fine, better for issue.