I will write about the state of maintenance as DOCOMO's assessment of the model itself.
First of all, I bought a C-rated one. The appearance is very clean, and there was a very slight scratch on the screen, but it doesn't bother me once I put the protective film on, and it was at a level where I finally noticed it from an angle, so I don't think it would bother me unless I was very nervous about it. It works normally, so there are no problems with normal use and the battery is sound. The reason for dropping one rating is that some rust was found in narrow and crevice areas such as the speaker and camera parts. Rust in these areas makes me a little worried about whether the inside is OK. Other than that, I had no complaints.