This is just to try larger ortho keyboards. It's a Boardwalk PCB with stainless steel plate in a Campine MkIV aluminium case that has been powdercoated white.
The layout is 60% ortho/ergodox:ish with MX HKKB blockers on the bottom row.
This case is one of few traymount HHKB-styled ones since they usually have other mounting methods. It sounds quite ok and looks nice with it's Fei Matcha switches.