First two rings have adjustable bands and the second two have solid bands. The first has high relief propeller and wing design against a plain smooth background. "Sterling Silver" impressed on the inner surface of the lower band. Minor tarnish and light wear on the bands in the form of microscopic marks but overall VF and first we've seen. Likely 1940s. Next in silver luster with black enamel top has a letter "T" at the center. c.1930s and Exc. Next are a pair of rings with identical bases featuring a vertical rectangle while along the very top edge are four more or less square shapes. Ring has raised top of rectangular panels with brass letters against black enamel backgrounds. The first has the initials "CG." Some tiny kinks on the band and it's just a little misshaped but overall still VG. Second has initials "PO" and this one is VF although not much luster remaining on the bands. All are seldom seen rings.