DCN & RONDA Balance staffs & winding stems

Zenith 18.5''' , Balance staff, DCN: 988

Zenith 18.5''' , Winding stem, DCN: 608

Zenith 18.75''' , Winding stem, DCN: 1717

Zenith 19''' FS, Balance staff, DCN: 989

Zenith 19''' N Chemin de fer, Balance staff, DCN: 43

Zenith 19''' N I nouveau, Balance staff, DCN: 990

Zenith 19''' N, VN, Winding stem, DCN: 208

Zenith 19''' N, Winding stem, DCN: 144

Zenith 20 - 20.5''', Balance staff, DCN: 239

Zenith 57 (5'''), Winding stem, DCN: 2238