1820 Pre Stamp Entire with 2 Line ATTLEBOROUGH Handstamp & Manuscript 4 Details Below (AM1578)

1820 Pre Stamp Entire with 2 Line ATTLEBOROUGH Handstamp & Manuscript 4 in Black indicating Recipient to Pay. 

A manuscript "4" in the same brown ink as the address, indicating 4d charged to the recipient. That fits neatly with the 1812–1839 English domestic rate table — Attleborough to Wymondham is only about 6–7 miles, and the "not exceeding 15 miles" rate for a single-sheet letter in this period was 4d.