25.20 mm x 19.90 mm plastic Y-shape, cylinder type crystal, Timex® REF 27-327901, fits: 1976 Timex® 27 Non-Water-Resistant Darwin D/D Models: 169515, 169615
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Timex®. Timex® warranty does not apply to parts supplied by H. & W. Perrin Company Limited.