Yes, its called a gorget.
And to answer the question of @old-ordnance
they are where a lace rest, or Arrêt de Cuirass, would have been mounted.
That articulated gorget thingy on the neck, does it have a name?
A fantastically etched and gilt Cuirass,
- Height (from floor): 62.2 in/158 cm
- Total Weight: 6.1 lbs/2784 g
Southern Germany, ca. 1510, housed at the Staatliche Kunstsammlungen Rüstkammer, Dresden.
Arrêt de Cuirass