Cartier - Tank Must Ivory Meca - 1980's

Technical specifications :
brand : Cartier
year :1980's
movement: manual 
function : none
case material: vermeil
case back material: vermeil 
case dimensions excluding crown: 23mm
case dimensions with crown: 26mm
dimensions horn to horn: 30mm
thickness (crystal included): 6.7mm
dimensions between lugs: 17mm
bracelet: not original 
buckle: optional
crown: original
crystal material: mineral (condition: 9/10)
water-resistant: no
box: no
paper : no
document : professional invoice