It's a wonderful medal. I would get it graded but before sending in have it conserved. I never had a grading company conserve a coin or medal but it might be worth it unless you do it properly yourself.
There's no hurry, do the right thing the right way.
I just see some grime that would probably "lift" off with careful proper soaking and proper rinse and dry.
Quote:Obv. Edifice in center; above, around Celebration at Newburgh, N. Y. / October 18th; below edifice, microscopic A. Demarest, Sc. N. Y.; upper border legend 1783 -- Centennial -- 1883; lower border legend Proclamation of peace, disbandment of the army
Rev. Coat of Arms in center; around He was most nobly crowned by refusing to be crowned; 13 stars around last lettering; border legend Washington's family coat of arms from which the American flag was designed
HK-134 Bronze. 41mm. Baker R-456A.
HK-135 White Metal. Baker R-456.
HK-135a Copper-plated.
HK-135b Silver.
VALLEY FORGE CENTENNIAL
1878
VALLEY FORGE, PA
Medal commemorates 100th anniversary of departure of Continental Army from Valley Forge June 19, 1778. Authorized by 45th Congress, designed and engraved by
William Barber, it was struck originally in 1880 at Philadelphia Mint; became one of Mint Medal Series (Miscellaneous No. 4).
Today, Valley Forge National Historical Park, 3,500 acres located 22 miles northwest of Philadelphia, preserves site of George Washington's encampment during bitter Winter of 1777-1778. Of 11,000 soldiers, almost 3,000 were incapacitated before Continental Army moved out to battle. Here in Park are restored soldier's huts, redoubts, field hospital and Washington's Headquarters. Later structures include Memorial Chapel, Cloister of Colonies, Peace Carillon, Museum of American History and Bell Tower of Daughters of the American Revolution.
NOTE: For additional Valley Forge anniversary medals, see Part I, Revolutionary War Battles--Anniversaries, Headquarters, etc.-- 1877-1903.