I picked this up from a seller in Paraguay for $6. Nothing comes up for it on the internet. The KT printed on the dial is a shield similar to the Seiko 5. The green dial is aged appropriately and changes shades with the lighting. The R.O.K and N stamped above the serial number looks like a factory stamp. It's not an engraving, it has the same type of metal fatigue around the letters as the stamped serial number. Serviced the movement, re-applied the dislodged indice, new crystal (it's a shame the original faceted crystal was too far gone. That will be replaced with a NOS when I find one), had to completely refinish the case. Apparently no one knows anything about this model, it doesn't exist, but I have it.