Ann Irwin is listed in Pennsylvania Archives, Colonial Records, Series 6, Volume XIII, page 457 as serving Saturday, December 16, 1780 at (Benedict) Arnold’s Sales for £sd 28 pounds, 2 shillings, and 6 pence.

 

http://www.fold3.com/image/#1|3103372

Ann Irwin is listed document “Forfeited Estates. Inventories and Sales” -Inventories and Sales” for December 16, 1780 for Attending at (Benedict) Arnold’s - Sales. She was paid in English sterling currency of £sd 28 pounds, 2 shillings, and 6 pence. 

This abbreviation meant "pounds, shillings, and pence", £sd (sometimes pronounced, and occasionally written, L.s.d.) was the popular name for the pre-decimal currencies (sterling) used in the Kingdom of England, later the United Kingdom, and ultimately in much of the British Empire. This abbreviation meant "pounds, shillings, and pence", and was usually pronounced that way, having originated from the Latin words "librae, solidi, denarii".^[1] Under this system, there were 12 pence in a shilling and 20 shillings, or 240 pence, in a pound. For much of the 20th century, £sd was the monetary system of most of the Commonwealth countries, the major exception being Canada.

December 1780
Gregorian

 S  M Tu  W Th  F  S
                1  2
 3  4  5  6  7  8  9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31