Irises: Can anyone name this Historic Iris? (#1 photo), 1 by Nana3

Nana3 wrote:
I have several different Historic Iris pre 1960 that were originally purchased by my grandmother. She purchased most of these from a mail order catalog for 50 cents each. My rhizomes of each of the many different ones have multiplied and need divided and I would like to trade here on DG rhizome for rhizome for some other varieties that I don't have in my gardens. I am taking photos as mine open into bloom and will probably be posting different cultivars over the next couple of weeks.

Nana3