Below is a listing of the Obverse design changes. I have only illustrated each ODV with 1 or 2 photos, but usually there have been several changes in the design.

ODV-001 Narrow Border	Philadelphia	Denver	San Francisco	Proof
	1979-P	1979-D	1979-S	1979-S
ODV-002 Wide Border	Philadelphia	Denver	San Francisco	Proof
	1979-P 1980-P 1981-P	1980-D 1981-D	1980-S 1981-S	1980-S 1981-S
ODV-003 Redesigned Lettering	Philadelphia	Denver	San Francisco	Proof
	1999-P	1999-D		1999-P