Japan is a golden land for hobbyists. Among other things, twice a year there's a big convention in Tokyo called the "Wonder Festival" or Wonderfest for short where anyone can buy a temporary license to sell small series of products based on many intellectual properties.
Some of the most interesting Berserk merchandise has come from there, like that beherit that can open its eyes and mouth. Another one is this little diorama of Puck and Ivalera taken from a scene at the end of volume 24 when Schierke explains telepathy to the group. She's just given them each a strand of her hair, which allows them to communicate over distances.
Miura has Puck styled after the iconic RX-78-2 Gundam robot, and he's uttering "そこか!", meaning "over there!", while Ivalera says "どこよ?", meaning "where?". For those who aren't familiar, this is a reference to the original Gundam series' main character, Amuro Ray, who is revealed at some point to be a "Newtype", a form of telepath.
This diorama was sold as a model kit (meaning you have to assemble and paint it yourself) over 15 years ago.