Udall & BallouErmeto model coach cloack n. 1197991, outer case covered in black leather, inner case ...

Udall & Ballou
Ermeto model coach cloack n. 1197991,
outer case covered in black leather, inner case with crown at 12 o'clock and silver dial.
Hand wound movement obtained sliding the two parts of the outer case
Dimensions when it is closed 32 x 47 mm
Dimensions when it is open 32 x 70 mm