Vintage 40s Palter DeLiso Platform Peeptoe Slingback Shoes - Color to my eye appears to be darkest blue - I thought black, but placed side by side with a black shoe my verdict is blue.
In 1937 Palter DeLiso invented the very first peep-toe slingback pump! Info courtesy of: https://shopthrilling. com/collections/soulrust/heritage Find out more at the link.
Size 6 1/2 AA - please compare these measurements to a heel that fits you well - I wear a 6 usually and these fit pretty well due to being fairly narrow.
Measure 9 1/4" insole. 1 3/4" at inner heel. 2 3/4" at ball of foot. Heel is 3 1/2" tall.
Normal wear to insole and sole - see photos, use zoom, see back of one heel in particular for ding.

This item is sold from an excellent, highly rated vintage boutique.