Inside diameter of the bracelet is about 7 inches.  The cameo frame measures about 7/8 X 3/4".  The narrowest part of the band is about 3/8" wide.  My magnet is not attracted to either the cameo frame or the bracelet band.  The clasp is signed ALL CO, as shown.   There are no metal marks.   A L LINDROTH Co was formed in Attleboro, Massachusetts in the late 1800s, and closed sometime between the 1920s and 50s.  Their art deco style jewelry is sought after by collectors.  This bracelet is a great example of their work.  It is in great pre-owned condition, but the piece of metal that slides into the clasp and locks it is missing, as shown in 4 photos.  Buy more and save - If you are buying multiple items from us, just let us know before you pay, and we will combine shipping to save you money.