First Day Cover 28 sets 1972 Classical Arts 4th Series 1972 Centennial of the School System 2 sets 1972 International Letter Writing Week 9 sets 1972 Centennial of Railways 6 sets 1972 27th National Sports Festival 1973 Takamatsuzuka Tomb Donation Stamp 1973 National Greening Campaign 1973 Suzuka Quasi-National Park 1973 Western Chugoku Mountains Quasi-National Park 1973 International Letter Writing Week 2 sets 1973 Tenryu Okumikawa Quasi-National Park 1974 50th Wedding Anniversary Commemorative Stamp Art Cover 1974 Iriomote National Park Stamp Art Cover → Identical items are indicated with ○ sets on the right. Thank you for looking.