First is a most unusual figural featuring the Trylon and Perisphere with the band representing the walkway which connected the two. This band can be expanded to fit various sized fingers. One edge of it carries the text "New York World's Fair 1939 ©N.Y.W.F." Mint. Next is another rarely seen ring, this with a base of silvered brass having adjustable bands. Top has enamel shield showing the fair's logo and with text "New York 1939 World's Fair." Tiny luster loss but VF. Third is all brass ring with adjustable bands. Top again shows the fair's logo with 1939 date and tiny copyright text. Trivial bend on bottom prong. Fourth is silvered brass ring with adjustable bands. This has circular top again showing the logo with text "New York World's Fair 1939." Minor bend on bottom prongs with tiny luster loss. A nice group of quite unusual varieties.