Hi all, first post, so apologies if this has landed in the wrong section.
I've recently discovered my grandfather's Seiko 7009 and started wearing it. The crystal on it is cracked and chipped, so I was thinking of replacing it. As I've started to look around, I learned about sapphire crystals. Does anyone know if it's at all possible to find a sapphire replacement for an old watch like this, or should I stick to mineral?