4FL

Start Year
1925
End Year
1925
Jewels
17
Alex
Posted February 10, 2016 - 2:36am

A tiny movement, 2mm smaller than the 5AP in both width and height. It sits in the Pola. Reverend Rob indicated to me it is based on the Felsa 52.

 

Alex
Posted February 10, 2016 - 2:38am