34.90 mm x 28.01 mm x 1.06 mm (thick) Y-shape curved (12 to 6 and 3 to 9) mineral crystal, generic (not original), to fit Franck Muller® reference 6850
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Franck Muller®. Franck Muller® warranty does not apply to parts supplied by H. & W. Perrin Company Limited.