Although during the same period, 'the Keicho oban' had been minted as well, the Daibutsu oban is categorized into the Tensho oban because it was minted by the order of the Toyotomi family.
鋳造時期は慶長大判と重なるが、豊臣家によるものであることから天正大判の範疇に入れられる。