Obverse Design Legend curving above says "« OF « ADMIRAL « VERNON « AND « COMMODORE « BROWN »". There is no inside line enclosing the legend. Hip length (1/2 length) figure of Brown is on our left and Vernon on our right. Brown is profile right. Vernon is 1/2 left, looking almost fully forward. Both are holding batons. Brown's head is beneath the "NO" of "VERNON", and his elbow is by the stop between "OF" and "ADMIRAL". Vernon's head is beneath the "OMM" of "COMMODORE", and his elbow by the "N" in "BROWN". In exergue (under a line along the bottom of the medal) it says ". BY . THE . COURAGE ." and ". AND . CONDUCT" in two lines. The medal has a beaded edge.
Reverse Design Legend curving along the top says "PORTO . BELLO . WAS . TAKEN . WITH . SIX . SHIPS . ONLY . NOV . 22 . 1739 »". There is no inside line enclosing the legend. In exergue (under a line along the bottom of the medal) it says "I. W. FECIT". The center is the attack on Portobello. The six ships are lined up one, two and three, the three upper ships being at the extreme right. The three ships closest to the right edge are sailing left, and the other three are sailing right. There are five boats are in the harbor and a sixth outside the harbor with a flag. A towers point at the "I" of "WITH" and a steeple points to the stop after the letter "X". There are water lines in the harbor. The edge of the medal is beaded.
Distinctions There are about 31 similar varieties with Brown and Vernon. Of those, about 27 involve 1/2 length Brown and Vernon's facing each other holding batons. However, only two have "BY THE COURAGE AND CONDUCT" in exergue on the obverse. This one appears to have a smooth background on both sides, although described by McCormick-Goodhart as reverse "striated". The other variety is described as being identical but with the background on both sides stippled.
Detail On Obverse of VN-2.285 Detail On Reverse of VN-2.285
Detail of VN-2.285
Note the "BY THE COURAGE AND CONDUCT" in exergue.
Detail of VN-2.285
Note the tower at "I" and the steeple after the "X". Also note the five boats in the harbor.
Metal Brass and copper. Weight Unknown. Size and Shape Round, 37 mm in diameter.
Rarity Common. Designer or Issuer I.W. FECIT. Other Catalog Numbers Betts #268, McCormick-Goodhart #145.
Notes

Street Scene in the town of Portobello sometime in the 1920's
Street Scene in the town of Portobello sometime in the 1920's
From "The Panama Canal" photo book, author unknown