Set of 6 stamps featuring Japanese mountains Although the postmarks are not visible, I had them examined at the post office. They couldn't say for sure without a detailed inspection, but they said the postmarks might be missing or the currency unit (sen) suggests they are likely unusable and for collection purposes. Please consider them as used. ⚪︎ 1st National Park Bandai-Asahi, Mount Bandai ⚪︎ 1st National Park Chubu Sangaku, Mount Shirouma ⚪︎ Industrial Design, Mount Hotaka, Showa watermark not present ⚪︎ 2600th Anniversary of the Imperial Era, 4 sen ⚪︎ 1st National Park Saikai National Park ⚪︎ 1st National Park Fuji-Hakone - Number of stamps: 6 - Issuing country of stamps: Japan Thank you for viewing. I am unsure of the exact details as these are old items. Please refer to the photos as I am unsure whether the currency unit is yen or sen. There is age-related deterioration. They are currently unusable. Will be shipped in simple packaging.