Characterization of a Coin from the Shipwreck of HMS Swift (1770)
Figure 1. Group of disks found in the Swift site (scale in cm) (Courtesy of PROAS-INAPL, Buenos Aires, Argentina).

Figure 2. Disk selected for metallurgical analysis (Photo by the authors, 2005).

Figure 3. Both faces of the disk with side light (Photo by the authors, 2005).

Figure 4. SEM image which shows the dendritic structure on the surface (Courtesy of the Instituto Nacional de Tecnología Industrial, Buenos Aires, Argentina).

