Open toe-heels are marked "Japan" on the left foot and they are blank on the right foot. (1959-1963). The 1959 version had holes in the soles to fit the number one Barbie stand.
Closed-toe heels are both marked Japan on the arches. There is no left or right, they are the same.
Navy Blue open-toe heels are hard to find. You will need to look closely at them as they may appear black to you. They are found with "Gay Parisienne, Busy Gal, and Commuter Set" ensembles.
The harder to find turquoise open-toe heels were only available with American Girl Barbie and Bend-leg Midge only.
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