3 Original illustrations for lingerie designs. VINTAGE signed fashion drawings!

This is a set of 3 hand drawn original designs for lingerie and appear to be from about the 1960s. They feature 3 models, each in a different style of dress, all of which are numbered. These are likely fashion designs and not sewing patterns. The one facing forward has an embossed stamp on the top left corner and a signature (unknown name) on the bottom in blue. The stamp, I think, reads “Strathvore Use Other Side” with a logo. The closeups show that they were sketched in various forms of pencil, ink, water color and painted over. The backs are all different. The edges are slightly yellowed, as pictured. They’ve been kept hanging in my windowless closet for nearly 20 years so they’ve stayed in excellent condition considering their age! Would look great in a boudoir, craft room or walk in closet. Beautiful and unique artwork! Each are sized approximately 6.5” x 12”, slightly irregular as they are hand cut. Questions? Need more pics? Just ask!