I have got a very special, rare piece here! It's an early Trifari Egyptian Revival bib necklace, pre-1955, designed by famed jeweler Alfred Philippe. It has two hook clasps, both signed, and the tiny T with crown hang tag. It's got black AB glass beads, and it is in gorgeous, immaculate condition!
The part that goes around your neck is small, choker-length at about 12-14.