Wrought iron swivel chairs from Angelica Kitchen in NYC

I acquired these two wrought iron swivel chairs as a memento from Angelica Kitchen, a former landmark vegetarian restaurant in Manhattan’s East Village that opened in 1976, when it closed in 2017. However, I don’t know much about the chairs themselves. The seat is about 14” in diameter and the chairs measure about 30” to the top of the seat and 48” to the top of the back. Any information about their possible age, make, name of the style, etc., would be appreciated.