Asian Anime 'one piece military style'/ 'ichiban Kuji' 'nami' collectible mug

Asian Anime themed marked 'one piece military style mug, It measures around 3.5" tall and 3.25" across. According to research: this mug is referred 'One Piece Military Style"/ "Ichiban Kuji" . Also, it is considered a rare mug anime featuring Thatures Nami in a military pin-up art inspired design and is supposedly won in a lottery drawn every month by the brand Banpresto in Japan. Other than that I have no other information due to the language all marked in Asian on the bottom. Pre owned good condition. For mroe details, please study all pictures.