Seiko 5Y23 White Quartz Dial, 28.5mm

These dials are the correct dimensions, 28.5mm, and fall within the NH’s thickness tolerances (.3mm - .6mm thick). I’ve confirmed that the date windows line up with a 4r (see picture) but you’ll need to remove the dial feet (which I’m happy to do for you) before applying.

For those who aren’t accustomed to removing dial feet, it’s perfectly normal and I’ll supply you with some dial stickers you can use to adhere the dial to the movement.