1870 (1 yen) mint?

hello guys

so I was updating the pictures of the 1 yen 1870 edges and then I realized the Japanese osaka was not open until 1871

so I got curious and jump into the rabbit hole of searching the mint and I saw this on Wikipedia (I know it's not reliable)

https://en.m.wikipedia.org/wiki/1_yen_coin#:~:text=Early%20yen%20(1870%E2%80%931914),-The%20first%20Japanese&text=The%20yen%20was%20officially%20adopted,issued%20until%20the%20following%20year.

if the information I got is wrong please correct me thank you very much