![Gruen® Crystals CY-GRUEN01 REF 780CO](http://perrinwatchparts.com/cdn/shop/products/CY-GRUEN01_300x282.jpg?v=1681399539)
30.87 mm x 25.58 mm x 31.98 mm o-shape cylinder flange type plastic crystal with white ring, original vintage Gruen® crystal, reference 780CO,
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Gruen®. Gruen® warranty does not apply to parts supplied by H. & W. Perrin Company Limited