A cheeky ditto has transformed into various anime characters.
This is red blood cell AE3803 from Cells at Work!
There were two variants, of when she's transporting carbon dioxide and when she's transporting oxygen.
Carbon dioxide variant is sold out.
31mm x 22.7mm
Screenprinted box detail
Hard enamel pin with gold coloured plating
Logo on back with rubber pin post
Comes with backing card