{"product_id":"gs-fancy-crystal-co558-for-hamilton-91420-omega-6777-29-7-x-22-5mm-new","title":"GS Fancy Crystal CO558 for HAMILTON 91420, OMEGA 6777 - 29.7 x 22.5mm - New","description":"\u003cp\u003e\u003cstrong\u003eGS\u003c\/strong\u003e Flexo CO590 Fancy Acrylic Crystal for \u003cstrong\u003eHAMILTON\u003c\/strong\u003e case # 91420, \u003cstrong\u003eOMEGA\u003c\/strong\u003e case # 6777 wrist watches and perhaps other watches as well, measures 29.7 x 22.5 mm, new in envelope. These are perfectly clear crystals that haven't been stored for 75+ years like other ones on eBay often are. Pretty much all GS crystals require some light filing \/ sanding for proper fit, as indicated on the back of the envelope. That said, I completely disagree that they require no cementing, but they require very little. Can supply just about any size Watch Crystal you need (acrylic or glass) so feel free to inquire. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"GS","offers":[{"title":"Default Title","offer_id":49246831771956,"sku":"CMC-GSCO558-08","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-08-1420.20.16.jpg?v=1786764238","url":"https:\/\/www.vintagetimeparts.com\/products\/gs-fancy-crystal-co558-for-hamilton-91420-omega-6777-29-7-x-22-5mm-new","provider":"Vintage Time Parts","version":"1.0","type":"link"}