This is a Bermuda Pre-Stamp Cover dated 10/1/1831.  It features a LARGE SUPERB STRIKE BERMUDA FLEURON Mark in black on the reverse side!  It was sent to London per HMS Falconer, and endorsed 'single sheet.'  It was also charged 2/2d and includes its contents.

Please treat with care.  It's in very good shape, but it is still nearly 200 years old.

This item is over $100 USD so I will ship it using Priority Mail in the United States, and Registered Mail Overseas at buyer's expense.  This is to ensure that it reaches you in a safe and timely manner, and includes tracking!