Examples of Duty & Revenue stamps (not covered in this website) which occasionally appear for sale as 'unidentified" postage stamps. For further detail please refer to Books & DVD's folder tab - Japan Duty Stamp Catalogue by Koichi Furuya. Examples are included for information only and are not covered in any detail within this website. If a Duty & Revenues collector/viewer is interested in submitting images they will be duly uploaded for all to view.