United States, 2000 AD., Philadelphia mint, ¼ Dollar, Maryland commemorative, KM 306.

United States, 50 State Quarters series, Maryland commemorative, engravers: J. Flanagan (obverse) and Thomas D. Rodgers (reverse), Philadelphia mint, 2000 AD.,
¼ Dollar / 25 Cents (24,3 mm / 5,72 g), copper-nickel clad copper, theor. mint weight 5,67 g., mintage 678.200.000 , coin alignment ↑↓ (180°), reeded edge,
Obv.: UNITED STATES OF AMERICA / LIBERTY - IN / GOD WE / TRUST / P / QUARTER DOLLAR , portrait of George Washington facing left, motto and mintmark to r.
Rev.: MARYLAND / 1788 / THE - OLD / LINE - STATE / TDR / 2001 / E PLURIBUS UNUM , the dome of the Maryland Statehouse flanked by two white oak (the state tree) leaf branches, above the date of Maryland´s admission into the Union "1788"; engraver´s initials TDR below r. branch.
KM 306 .

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. Maryland was the seventh state to ratify the United States Constitution, and three nicknames for it (the Old Line State, the Free State, and the Chesapeake Bay State) are occasionally used. Maryland is the 9th least extensive, but the 19th most populous and the 5th most densely populated of the 50 United States. The state's most populated city is Baltimore. Its capital is Annapolis. It was named after Queen Henrietta Maria.

The Mason–Dixon Line (or Mason and Dixon's Line) was surveyed between 1763 and 1767 by Charles Mason and Jeremiah Dixon in the resolution of a border dispute between British colonies in Colonial America. It is a demarcation line among four U.S. states, forming part of the borders of Pennsylvania, Maryland, Delaware, and West Virginia (then part of Virginia). In popular usage, especially since the Missouri Compromise of 1820 (apparently the first official use of the term "Mason's and Dixon's Line"), the Mason–Dixon Line symbolizes a cultural boundary between the Northeastern United States and the Southern United States (Dixie) and legality of slavery as a result, although the Missouri Compromise Line had much more definitive geographic connection to slavery in the United States leading up to the Civil War.