Gibraltar - 1810

1 Quarto
Obverse - Gibraltar - 1 Quarto - 1810 Reverse - Gibraltar - 1 Quarto - 1810
Obverse - VALUE ONE QUARTO The fortress at Gibraltar.
Below fortress, 1810
Reverse - A crouching lion. In it's right paw is a large key.
Legend, PAYABLE AT ROBERT KEELING & SONS
Exergue, GIBRALTAR
 
A smaller version of the two quartos of 1810 also on this site. You might want to take a look at it (the two quartos) for a little clearer view of the reverse.
There's a second copy of this coin on the site that is in slightly better shape.