NGC $1 Proof Eisenhower Dollar 40% Silver Planchet

Proof 40% silver Ike dollar planchet. The planchet has a raised rim, and was for use for striking a 1971-1976 era 40% silver proof Ike dollar. 

24.7 grams, which is correct. 

Proof, with glimmering surfaces and a hint of light white toning.