Another distinctive feature of the properties accredited as an important art object is that the accreditation of the properties in several particular fields markedly stands out in number, namely swords, ukiyo-e pictures, ancient Japanese writing (mainly the calligraphy of the Heian and Kamakura periods) and Imperial letters (the calligraphy of emperors).
また、重要美術品等認定物件は、分野的には、刀剣、浮世絵、古筆（主として平安～鎌倉期の筆跡を指す）、宸翰（しんかん：天皇の筆跡）など、いくつかの特定分野の物件の認定が際立って多いのも特色である。