Vintage Yves Saint Laurent Boris Black stacked heel

Vintage black Yves Saint Laurent Boris stacked heel with original box and tissue paper. Originally purchased at Chuckies on the Upper West Side in New York City in the early 1980's for $180 (see tag in photos). Shoes are in excellent condition, leather is virtually without any sign of wear, and the bottoms have slight wear appropriate to the few times they were walked in. Size is 7.5 but on the smaller side.