Vintage Very Light SILHOUETTE Austria Eyeglasses Rimless Gold Tone 6051 19/40

Very light, rimless gold tone Silhouette eyeglasses. I’m not sure how to read the size, I included pictures of the side. Color is 6051, gold. M7395 I think it is made of titanium. Made in Austria. This is preowned, the glasses is I’m sure prescribed. Good preowned condition.