A Sailing Barge in the Downs; unknown artist; nineteenth century; formerly John Constable; 1776-1837; British; undated; Graphite on medium; cream; wove paper mounted to beige laid paper; Sheet: 3 1/2 x 3 1/8 inches (8.9 x 7.9 cm) and Mount: 5 5/8 x 5 3/8 inches (14.3 x 13.7 cm); barge; marine art; sailboat; sailing; sea; Downs; England; Europe; Kent; United Kingdom