Vintage Framed Photographs of Nine Women

Found This Recently In A Barn Sale. It Has 9 Photographs Of Women. Wondering If There Is A Reason That There Is 9. Since I Know Nothing about Vintage photography, I Was Hoping That Someone Would Know What Type Or How Old This Might Be. The Bscking Is Missing And Each Photo Is Held In Place With Tiny Nails Or Pins With Heads. There Is Some graying As You Can See In Their Hair.