Here is the perfect flat sapphire crystal for the Seiko SKX007 (or 009). Whatever look, homage or enhancement you make a sapphire crystal is the best and usually the first mod you do and rightfully so. It gives that luxury, high-price, look instantly.
We sell flat clear sapphires but also double dome with a variety of anti-reflective coatings.
It fits perfectly, and is a 3-5 minute swap out job.