The calculator has to be ported to a new site as it's no longer hosted at University of Kansas. We'll watch for it and as soon as it's working again we'll re-post here.
I have purchase a rare seiko 5 SNX111 from ebay. By using the tool I am able to get this information. But I am doubt that this is ten years watch.
Really don't need the calculator link, this is very easy. All Seikos have a serial number engraved into the case. The first two digits are the key:That calculator link is still broke. The photos database continues to be available.