30.20 mm (outside) 26.60 mm x 19.20 mm (inside), F-shape plastic flange type crystal, to fit Vintage Tissot® case number 44214-1Y
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Tissot®. Tissot® warranty does not apply to parts supplied by H. & W. Perrin Company Limited.