The pound was the currency of Maryland

Maryland

Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...

 until 1793. Initially, the British pound circulated along with foreign coins. From 1733, this was supplemented by paper money, known as "Proclamation Money". Although this was denominated in pounds, shilling

Shilling

The shilling is a unit of currency used in some current and former British Commonwealth countries. The word shilling comes from scilling, an accounting term that dates back to Anglo-Saxon times where it was deemed to be the value of a cow in Kent or a sheep elsewhere. The word is thought to derive...

s and pence

Penny

A penny is a coin or a type of currency used in several English-speaking countries. It is often the smallest denomination within a currency system.-Etymology:...

, they were worth less than sterling, with 1 Maryland shilling = 9 pence sterling. A second "New" issue of notes was introduced in 1751, replacing the earlier notes at a rate of 1 New shilling = 1¼ Proclamation shillings.

The first issues of Continental currency in Maryland were denominated in £sd and Spanish dollars at a rate of 1 dollar = 4 shillings 6 pence. In 1780, two types of continental currency were issued, one valuing the Spanish dollar at 4 shillings 6 pence (printed in red ink and known as "Red Money"), the other (printed in black ink and known as "Black Money") valuing the Spanish dollar

Spanish dollar

The Spanish dollar is a silver coin, of approximately 38 mm diameter, worth eight reales, that was minted in the Spanish Empire after a Spanish currency reform in 1497. Its purpose was to correspond to the German thaler...

 at 7 shillings 6 pence.

The continental currency was replaced by the U.S. dollar at the rate of 1000 continental dollars = 1 U.S. dollar.