Documented works
| Work | Designation | Where it is |
|---|---|---|
| Wakizashi signed 播磨大掾藤原忠国 (Harima Daijō Fujiwara Tadakuni), 38.4 cm, with its wooden scabbard and its bag; from the Suzuki Kiichi collection | No designation | Nagoya City Museum |
| Spear signed 肥前住播磨大掾藤原忠國 (Hizen jū Harima Daijō Fujiwara Tadakuni), 38.5 cm, from the early Edo period, from the Maejima family, retainers of Matsushiro | No designation | Sanada Museum, Nagano |
| Katana signed 肥前住播磨守藤原忠国 (Hizen jū Harima no Kami Fujiwara Tadakuni), with its mounting of crabs, peonies and chrysanthemums | No designation | Tokyo National Museum (F-337) |
In the lists and the treatises
| Year | List or treatise | Rank |
|---|---|---|
| 1797 | 懐宝剣尺 (Kaihō Kenjaku), by Yamada Asaemon | 業物 (wazamono), the fourth of four grades, for the first |
| 1933 (published in 1935) | Tomita Kiyama’s ranking of shintō swordsmiths, in the manner of sumō | West maegashira |
Works on display
In the polishing section of the NBTHK’s 2017 新作名刀展 (Shinsaku Meitōten), a katana signed 肥前住播磨大掾藤原忠国 (Hizen jū Harima Daijō Fujiwara Tadakuni) was shown; the catalogue does not say which generation it belongs to.